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class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Tartalomjegyzék kinyitása/becsukása" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Tartalomjegyzék kinyitása/becsukása</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">251 (szám)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ugrás egy más nyelvű szócikkre. Elérhető 35 nyelven" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-35" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">35 nyelv</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/251_(number)" title="251 (number) – angol" lang="en" hreflang="en" data-title="251 (number)" data-language-autonym="English" data-language-local-name="angol" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/251_(%D8%B9%D8%AF%D8%AF)" title="251 (عدد) – arab" lang="ar" hreflang="ar" data-title="251 (عدد)" data-language-autonym="العربية" data-language-local-name="arab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/251_(%C9%99d%C9%99d)" title="251 (ədəd) – azerbajdzsáni" lang="az" hreflang="az" data-title="251 (ədəd)" data-language-autonym="Azərbaycanca" data-language-local-name="azerbajdzsáni" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/251_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="251 (число) – bolgár" lang="bg" hreflang="bg" data-title="251 (число)" data-language-autonym="Български" data-language-local-name="bolgár" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/251" title="251 – Mindong" lang="cdo" hreflang="cdo" data-title="251" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/251_(gidaghanon)" title="251 (gidaghanon) – szebuano" lang="ceb" hreflang="ceb" data-title="251 (gidaghanon)" data-language-autonym="Cebuano" data-language-local-name="szebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%A2%D9%A5%D9%A1_(%DA%98%D9%85%D8%A7%D8%B1%DB%95)" title="٢٥١ (ژمارە) – közép-ázsiai kurd" lang="ckb" hreflang="ckb" data-title="٢٥١ (ژمارە)" data-language-autonym="کوردی" data-language-local-name="közép-ázsiai kurd" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/251_(%C4%8D%C3%ADslo)" title="251 (číslo) – cseh" lang="cs" hreflang="cs" data-title="251 (číslo)" data-language-autonym="Čeština" data-language-local-name="cseh" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/251_(n%C3%B9mer)" title="251 (nùmer) – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="251 (nùmer)" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target"><span>Emiliàn e rumagnòl</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Berrehun_eta_berrogeita_hamaika" title="Berrehun eta berrogeita hamaika – baszk" lang="eu" hreflang="eu" data-title="Berrehun eta berrogeita hamaika" data-language-autonym="Euskara" data-language-local-name="baszk" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DB%B2%DB%B5%DB%B1_(%D8%B9%D8%AF%D8%AF)" title="۲۵۱ (عدد) – perzsa" lang="fa" hreflang="fa" data-title="۲۵۱ (عدد)" data-language-autonym="فارسی" data-language-local-name="perzsa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/251_(nombre)" title="251 (nombre) – francia" lang="fr" hreflang="fr" data-title="251 (nombre)" data-language-autonym="Français" data-language-local-name="francia" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/251_(uimhir)" title="251 (uimhir) – ír" lang="ga" hreflang="ga" data-title="251 (uimhir)" data-language-autonym="Gaeilge" data-language-local-name="ír" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/251_(nonm)" title="251 (nonm) – haiti kreol" lang="ht" hreflang="ht" data-title="251 (nonm)" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haiti kreol" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/251_(numero)" title="251 (numero) – olasz" lang="it" hreflang="it" data-title="251 (numero)" data-language-autonym="Italiano" data-language-local-name="olasz" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/251" title="251 – japán" lang="ja" hreflang="ja" data-title="251" data-language-autonym="日本語" data-language-local-name="japán" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/251" title="251 – koreai" lang="ko" hreflang="ko" data-title="251" data-language-autonym="한국어" data-language-local-name="koreai" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/251_(%D0%B1%D1%80%D0%BE%D1%98)" title="251 (број) – macedón" lang="mk" hreflang="mk" data-title="251 (број)" data-language-autonym="Македонски" data-language-local-name="macedón" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mni mw-list-item"><a href="https://mni.wikipedia.org/wiki/%EA%AF%B2%EA%AF%B5%EA%AF%B1" title="꯲꯵꯱ – manipuri" lang="mni" hreflang="mni" data-title="꯲꯵꯱" data-language-autonym="ꯃꯤꯇꯩ ꯂꯣꯟ" data-language-local-name="manipuri" class="interlanguage-link-target"><span>ꯃꯤꯇꯩ ꯂꯣꯟ</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/251_(nombor)" title="251 (nombor) – maláj" lang="ms" hreflang="ms" data-title="251 (nombor)" data-language-autonym="Bahasa Melayu" data-language-local-name="maláj" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mzn mw-list-item"><a href="https://mzn.wikipedia.org/wiki/%DB%B2%DB%B5%DB%B1_(%D8%B9%D8%AF%D8%AF)" title="۲۵۱ (عدد) – mázanderáni" lang="mzn" hreflang="mzn" data-title="۲۵۱ (عدد)" data-language-autonym="مازِرونی" data-language-local-name="mázanderáni" class="interlanguage-link-target"><span>مازِرونی</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Talet_251" title="Talet 251 – norvég (nynorsk)" lang="nn" hreflang="nn" data-title="Talet 251" data-language-autonym="Norsk nynorsk" data-language-local-name="norvég (nynorsk)" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/251_(nomoro)" title="251 (nomoro) – északi szeszotó" lang="nso" hreflang="nso" data-title="251 (nomoro)" data-language-autonym="Sesotho sa Leboa" data-language-local-name="északi szeszotó" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%DB%B2%DB%B5%DB%B1_(%D8%B9%D8%AF%D8%AF)" title="۲۵۱ (عدد) – pastu" lang="ps" hreflang="ps" data-title="۲۵۱ (عدد)" data-language-autonym="پښتو" data-language-local-name="pastu" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/251_(num%C4%83r)" title="251 (număr) – román" lang="ro" hreflang="ro" data-title="251 (număr)" data-language-autonym="Română" data-language-local-name="román" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/251_(tal)" title="251 (tal) – svéd" lang="sv" hreflang="sv" data-title="251 (tal)" data-language-autonym="Svenska" data-language-local-name="svéd" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mia_mbili_hamsini_na_moja" title="Mia mbili hamsini na moja – szuahéli" lang="sw" hreflang="sw" data-title="Mia mbili hamsini na moja" data-language-autonym="Kiswahili" data-language-local-name="szuahéli" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/251_(%D1%81%D0%B0%D0%BD)" title="251 (сан) – tatár" lang="tt" hreflang="tt" data-title="251 (сан)" data-language-autonym="Татарча / tatarça" data-language-local-name="tatár" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/251_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="251 (число) – ukrán" lang="uk" hreflang="uk" data-title="251 (число)" data-language-autonym="Українська" data-language-local-name="ukrán" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/251_(%D8%B9%D8%AF%D8%AF)" title="251 (عدد) – urdu" lang="ur" hreflang="ur" data-title="251 (عدد)" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/251_(son)" title="251 (son) – üzbég" lang="uz" hreflang="uz" data-title="251 (son)" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="üzbég" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/251_(s%E1%BB%91)" title="251 (số) – vietnámi" lang="vi" hreflang="vi" data-title="251 (số)" data-language-autonym="Tiếng Việt" data-language-local-name="vietnámi" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/251" title="251 – kínai" lang="zh" hreflang="zh" data-title="251" data-language-autonym="中文" data-language-local-name="kínai" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/251" title="251 – min nan kínai" lang="nan" hreflang="nan" data-title="251" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="min nan kínai" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/251" title="251 – kantoni" lang="yue" hreflang="yue" data-title="251" data-language-autonym="粵語" data-language-local-name="kantoni" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q857136#sitelinks-wikipedia" title="Nyelvközi hivatkozások szerkesztése" class="wbc-editpage">Hivatkozások szerkesztése</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Névterek"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/251_(sz%C3%A1m)" title="A lap megtekintése [c]" accesskey="c"><span>Szócikk</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Vita:251_(sz%C3%A1m)&action=edit&redlink=1" rel="discussion" class="new" title="Az oldal tartalmának megvitatása (a lap nem létezik) [t]" accesskey="t"><span>Vitalap</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Nyelvvariáns váltása" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button 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class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=251_(sz%C3%A1m)&action=history" title="A lap korábbi változatai [h]" accesskey="h"><span>Laptörténet</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Oldal eszközök"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Eszközök" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Eszközök</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Eszközök</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">áthelyezés az oldalsávba</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">elrejtés</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="További lehetőségek" > <div class="vector-menu-heading"> Műveletek </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/251_(sz%C3%A1m)"><span>Olvasás</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=251_(sz%C3%A1m)&action=edit" title="Az oldal forráskódjának szerkesztése [e]" accesskey="e"><span>Szerkesztés</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=251_(sz%C3%A1m)&action=history"><span>Laptörténet</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Általános </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Speci%C3%A1lis:Mi_hivatkozik_erre/251_(sz%C3%A1m)" title="Az erre a lapra hivatkozó más lapok listája [j]" accesskey="j"><span>Mi hivatkozik erre?</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Speci%C3%A1lis:Kapcsol%C3%B3d%C3%B3_v%C3%A1ltoztat%C3%A1sok/251_(sz%C3%A1m)" rel="nofollow" title="Az erről a lapról hivatkozott lapok utolsó változtatásai [k]" accesskey="k"><span>Kapcsolódó változtatások</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Speci%C3%A1lis:Speci%C3%A1lis_lapok" title="Az összes speciális lap listája [q]" accesskey="q"><span>Speciális lapok</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=251_(sz%C3%A1m)&oldid=17289047" title="Állandó hivatkozás ezen lap ezen változatához"><span>Hivatkozás erre a változatra</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=251_(sz%C3%A1m)&action=info" title="További információk erről a lapról"><span>Lapinformációk</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Speci%C3%A1lis:Hivatkoz%C3%A1s&page=251_%28sz%C3%A1m%29&id=17289047&wpFormIdentifier=titleform" title="Információk a lap idézésével kapcsolatban"><span>Hogyan hivatkozz erre a lapra?</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Speci%C3%A1lis:UrlShortener&url=https%3A%2F%2Fhu.wikipedia.org%2Fwiki%2F251_%28sz%25C3%25A1m%29"><span>Rövidített URL készítése</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Speci%C3%A1lis:QrCode&url=https%3A%2F%2Fhu.wikipedia.org%2Fwiki%2F251_%28sz%25C3%25A1m%29"><span>QR-kód letöltése</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Nyomtatás/exportálás </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Speci%C3%A1lis:K%C3%B6nyv&bookcmd=book_creator&referer=251+%28sz%C3%A1m%29"><span>Könyv készítése</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Speci%C3%A1lis:DownloadAsPdf&page=251_%28sz%C3%A1m%29&action=show-download-screen"><span>Letöltés PDF-ként</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=251_(sz%C3%A1m)&printable=yes" title="A lap nyomtatható változata [p]" accesskey="p"><span>Nyomtatható változat</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Társprojektek </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:251_(number)" hreflang="en"><span>Wikimédia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q857136" title="Kapcsolt adattárelem [g]" accesskey="g"><span>Wikidata-adatlap</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Oldal eszközök"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Megjelenés"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Megjelenés</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">áthelyezés az oldalsávba</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">elrejtés</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> <div id="mw-indicator-indicator-fr-review-status" class="mw-indicator"><indicator name="fr-review-status" class="mw-fr-review-status-indicator" id="mw-fr-revision-toggle"><span class="cdx-fr-css-icon-review--status--stable"></span><b>Ellenőrzött</b></indicator></div> </div> <div id="siteSub" class="noprint">A Wikipédiából, a szabad enciklopédiából</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><div id="mw-fr-revision-messages"><div id="mw-fr-revision-details" class="mw-fr-revision-details-dialog" style="display:none;"><div tabindex="0"></div><div class="cdx-dialog cdx-dialog--horizontal-actions"><header class="cdx-dialog__header cdx-dialog__header--default"><div class="cdx-dialog__header__title-group"><h2 class="cdx-dialog__header__title">Változat állapota</h2><p class="cdx-dialog__header__subtitle">Ez a lap egy ellenőrzött változata</p></div><button class="cdx-button cdx-button--action-default cdx-button--weight-quiet
							cdx-button--size-medium cdx-button--icon-only cdx-dialog__header__close-button" aria-label="Close" onclick="document.getElementById("mw-fr-revision-details").style.display = "none";" type="submit"><span class="cdx-icon cdx-icon--medium
							cdx-fr-css-icon--close"></span></button></header><div class="cdx-dialog__body">Ez a <a href="/wiki/Wikip%C3%A9dia:Jel%C3%B6lt_lapv%C3%A1ltozatok" title="Wikipédia:Jelölt lapváltozatok">közzétett változat</a>, <a class="external text" href="https://hu.wikipedia.org/w/index.php?title=Speci%C3%A1lis:Rendszernapl%C3%B3k&type=review&page=251_(sz%C3%A1m)">ellenőrizve</a>: <i>2016. március 8.</i><p><table id="mw-fr-revisionratings-box" class="flaggedrevs-color-1" style="margin: auto;" cellpadding="0"><tr><td class="fr-text" style="vertical-align: middle;">Pontosság</td><td class="fr-value40" style="vertical-align: middle;">ellenőrzött</td></tr></table></p></div></div><div tabindex="0"></div></div></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="hu" dir="ltr"><table class="dablink noprint noviewer" style="padding-left: 2em; vertical-align: middle;" cellpadding="0" cellspacing="0"><tbody><tr><td style="padding-right:.25em;"><span typeof="mw:File"><a href="/wiki/F%C3%A1jl:Disambig.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Disambig.svg/19px-Disambig.svg.png" decoding="async" width="19" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Disambig.svg/29px-Disambig.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/72/Disambig.svg/38px-Disambig.svg.png 2x" data-file-width="230" data-file-height="183" /></a></span></td><td><i>Ez a szócikk a kétszázötvenegyes számról szól. A 251. évről szóló cikket lásd itt: <a href="/wiki/251" title="251">251</a>. </i></td></tr></tbody></table> <table class="infobox ujinfobox"> <tbody><tr><td colspan="2" class="fejlec matematikainfobox" style="color:black;background-color:#7bba6a;">251<br /> <small style="font-style:italic;">(kétszázötvenegy)</small></td></tr><tr><td colspan="2" style="text-align:center;"><div style="text-align:center"><small>… <a href="/wiki/247_(sz%C3%A1m)" title="247 (szám)">247</a> <a href="/wiki/248_(sz%C3%A1m)" title="248 (szám)">248</a> <a href="/wiki/249_(sz%C3%A1m)" title="249 (szám)">249</a> <a href="/wiki/250_(sz%C3%A1m)" title="250 (szám)">250</a> </small><b>« 251 »</b><small> <a href="/wiki/252_(sz%C3%A1m)" title="252 (szám)">252</a> <a href="/wiki/253_(sz%C3%A1m)" title="253 (szám)">253</a> <a href="/wiki/254_(sz%C3%A1m)" title="254 (szám)">254</a> <a href="/wiki/255_(sz%C3%A1m)" title="255 (szám)">255</a> …</small></div><div style="text-align:center"><small>… <a href="/wiki/220_(sz%C3%A1m)" title="220 (szám)">220</a> <a href="/wiki/230_(sz%C3%A1m)" title="230 (szám)">230</a> <a href="/wiki/240_(sz%C3%A1m)" title="240 (szám)">240</a> <a href="/wiki/250_(sz%C3%A1m)" title="250 (szám)">250</a> </small>•<small> <a href="/wiki/260_(sz%C3%A1m)" title="260 (szám)">260</a> <a href="/wiki/270_(sz%C3%A1m)" title="270 (szám)">270</a> <a href="/wiki/280_(sz%C3%A1m)" title="280 (szám)">280</a> <a href="/wiki/290_(sz%C3%A1m)" title="290 (szám)">290</a> …</small></div> <div style="text-align:center"><small>… <a href="/wiki/0_(sz%C3%A1m)" title="0 (szám)">0</a> <a href="/wiki/100_(sz%C3%A1m)" title="100 (szám)">100</a> <a href="/wiki/200_(sz%C3%A1m)" title="200 (szám)">200</a> </small>•<small> <a href="/wiki/300_(sz%C3%A1m)" title="300 (szám)">300</a> <a href="/wiki/400_(sz%C3%A1m)" title="400 (szám)">400</a> <a href="/wiki/500_(sz%C3%A1m)" title="500 (szám)">500</a> <a href="/wiki/600_(sz%C3%A1m)" title="600 (szám)">600</a> …</small></div></td></tr><tr><td class="fejezet" colspan="2" style="padding:1px 0px;background-color:#7bba6a;color:black;text-align:center;"><b>Tulajdonságok</b></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Norm%C3%A1lalak" title="Normálalak">Normálalak</a></b></td><td>2,51 · 10<sup>2</sup></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Kanonikus_alak#Számelmélet" title="Kanonikus alak">Kanonikus alak</a></b></td><td><a href="/wiki/Pr%C3%ADmsz%C3%A1mok" title="Prímszámok">Prímszám</a></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Oszthat%C3%B3s%C3%A1g" title="Oszthatóság">Osztók</a></b></td><td><a href="/wiki/1_(sz%C3%A1m)" title="1 (szám)">1</a>, 251</td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/R%C3%B3mai_sz%C3%A1m%C3%ADr%C3%A1s" title="Római számírás">Római számmal</a></b></td><td>CCLI</td></tr><tr><td class="fejezet" colspan="2" style="padding:3px 2px;background-color:#7bba6a;color:black;text-align:center;"><b>Számrendszerek</b></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Kettes_sz%C3%A1mrendszer" title="Kettes számrendszer">Bináris alak</a></b></td><td>11111011<sub>2</sub></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Nyolcas_sz%C3%A1mrendszer" title="Nyolcas számrendszer">Oktális alak</a></b></td><td>373<sub>8</sub></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Tizenhatos_sz%C3%A1mrendszer" title="Tizenhatos számrendszer">Hexadecimális alak</a></b></td><td>FB<sub>16</sub></td></tr><tr><td class="fejezet" colspan="2" style="padding:3px 2px;background-color:#7bba6a;color:black;text-align:center;"><b>Számelméleti függvények értékei</b></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Euler-f%C3%BCggv%C3%A9ny" title="Euler-függvény">Euler-függvény</a></b></td><td>250</td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/M%C3%B6bius-f%C3%BCggv%C3%A9ny" title="Möbius-függvény">Möbius-függvény</a></b></td><td>−1</td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Mertens-f%C3%BCggv%C3%A9ny" title="Mertens-függvény">Mertens-függvény</a></b></td><td>−2</td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Oszt%C3%B3sz%C3%A1m-f%C3%BCggv%C3%A9ny" title="Osztószám-függvény">Osztók száma</a></b></td><td>2</td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Oszt%C3%B3%C3%B6sszeg-f%C3%BCggv%C3%A9ny" title="Osztóösszeg-függvény">Osztók összege</a></b></td><td>252<br /><i><a href="/wiki/Hi%C3%A1nyos_sz%C3%A1mok" title="Hiányos számok">hiányos szám</a></i></td></tr><tr valign="top"><td class="cimke" style="padding:0px 3px 0px 0px;"><b><a href="/wiki/Val%C3%B3dioszt%C3%B3%C3%B6sszeg-f%C3%BCggv%C3%A9ny" title="Valódiosztóösszeg-függvény">Valódiosztó-összeg</a></b></td><td><a href="/wiki/0_(sz%C3%A1m)" title="0 (szám)">0</a></td></tr></tbody></table> <p>A <b>251 (kétszázötvenegy)</b> a <a href="/wiki/250_(sz%C3%A1m)" title="250 (szám)">250</a> és <a href="/wiki/252_(sz%C3%A1m)" title="252 (szám)">252</a> között található <a href="/wiki/Term%C3%A9szetes_sz%C3%A1mok" title="Természetes számok">természetes szám</a>. </p> <div class="mw-heading mw-heading2"><h2 id="A_matematikában"><span id="A_matematik.C3.A1ban"></span>A matematikában</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=251_(sz%C3%A1m)&action=edit&section=1" title="Szakasz szerkesztése: A matematikában"><span>szerkesztés</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Pr%C3%ADmsz%C3%A1mok" title="Prímszámok">Prímszám</a>. <a href="/wiki/J%C3%B3_pr%C3%ADmek" title="Jó prímek">Jó prím</a>. <a href="/wiki/Pillai-pr%C3%ADmek" title="Pillai-prímek">Pillai-prím</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Hivatkozások"><span id="Hivatkoz.C3.A1sok"></span>Hivatkozások</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=251_(sz%C3%A1m)&action=edit&section=2" title="Szakasz szerkesztése: Hivatkozások"><span>szerkesztés</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="citation"><a rel="nofollow" class="external text" href="http://www.research.att.com/~njas/sequences/b000010.txt"><i>Az Euler-függvény 1 és 10000 között</i></a>. (Hozzáférés: 2008. július 4.)</span></li> <li><span class="citation"><a rel="nofollow" class="external text" href="http://www.research.att.com/~njas/sequences/b008683.txt"><i>A Möbius-függvény 1 és 10000 között</i></a>. (Hozzáférés: 2008. július 4.)</span></li> <li><span class="citation"><a rel="nofollow" class="external text" href="http://www.research.att.com/~njas/sequences/b002321.txt"><i>A Mertens-függvény 1 és 10000 között</i></a>. (Hozzáférés: 2008. július 4.)</span></li></ul> <div class="tarsprojekt-alap noviewer"> <style data-mw-deduplicate="TemplateStyles:r27252708">.mw-parser-output .tarsprojekt-alap{float:right;clear:right;width:272px;display:flex;column-gap:10px;margin:0 0 1em 1em;border:1px solid #a2a9b1;padding:4px;background-color:var(--background-color-neutral-subtle,#f8f9fa);color:var(--color-base,#202122);font-size:95%}@media screen and (max-width:719px){.mw-parser-output .tarsprojekt-alap{float:none;width:auto;margin:0 0 1em}}@media print{.mw-parser-output .tarsprojekt-alap{display:none}}</style> <div class="tarsprojekt-alap-ikon"><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/Category:251_(number)" title="commons:Category:251 (number)"><img alt="Commons:Category:251 (number)" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/50px-Commons-logo.svg.png" decoding="async" width="50" height="67" class="mw-file-element" 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