{"id":28568,"date":"2024-03-20T04:51:33","date_gmt":"2024-03-20T03:51:33","guid":{"rendered":"https:\/\/xmau.com\/wp\/notiziole\/?p=28568"},"modified":"2024-03-19T14:51:24","modified_gmt":"2024-03-19T13:51:24","slug":"nuovo-record-di-cifre-per-pi-greco","status":"publish","type":"post","link":"https:\/\/xmau.com\/wp\/notiziole\/2024\/03\/20\/nuovo-record-di-cifre-per-pi-greco\/","title":{"rendered":"Nuovo record di cifre per pi greco"},"content":{"rendered":"<div class='__iawmlf-post-loop-links' style='display:none;' 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12:36:04&quot;,&quot;http_code&quot;:200},&quot;process&quot;:&quot;done&quot;},{&quot;id&quot;:1384,&quot;href&quot;:&quot;https:\\\/\\\/amzn.to\\\/3IGUwWP&quot;,&quot;archived_href&quot;:&quot;&quot;,&quot;redirect_href&quot;:&quot;https:\\\/\\\/www.amazon.it\\\/Chiamatemi-greco-Biografia-numero-matematica\\\/dp\\\/8822069072?__mk_it_IT=%C3%85M%C3%85%C5%BD%C3%95%C3%91&amp;crid=3JDD7OENV918C&amp;dib=eyJ2IjoiMSJ9.z1NzWpYdB6jgupsk3Kp46KtJAPcqTHC5D0XNYZxk04U.fB9cc3ISqLtFvF_Kt_Y8tJI08g2q9VSKmQLhhuoAfGU&amp;dib_tag=se&amp;keywords=chiamatemi+pi+greco&amp;qid=1710855993&amp;sprefix=chiamatemi+pi+greco,aps,123&amp;sr=8-1&amp;linkCode=sl1&amp;tag=notizioledima-21&amp;linkId=197a00d780b513f552c02677d2187d47&amp;language=it_IT&amp;ref_=as_li_ss_tl&quot;,&quot;checks&quot;:[],&quot;broken&quot;:false,&quot;last_checked&quot;:null,&quot;process&quot;:&quot;done&quot;},{&quot;id&quot;:1385,&quot;href&quot;:&quot;https:\\\/\\\/openclipart.org\\\/detail\\\/298417\\\/pi-number-contour-text&quot;,&quot;archived_href&quot;:&quot;&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[],&quot;broken&quot;:false,&quot;last_checked&quot;:null,&quot;process&quot;:&quot;done&quot;}]'><\/div>\n<p><a href=\"https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/03\/pi.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/03\/pi.jpg?resize=300%2C288&#038;ssl=1\" alt=\"pi greco\" width=\"300\" height=\"288\" class=\"alignleft size-medium wp-image-28569\" srcset=\"https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/03\/pi.jpg?resize=300%2C288&amp;ssl=1 300w, https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/03\/pi.jpg?w=595&amp;ssl=1 595w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a> La scorsa settimana \u00e8 stato annunciato un nuovo record di numero di cifre di pi greco. Bisogna dire che non c&#8217;\u00e8 stato chiss\u00e0 quale miglioramento: da 100 trilioni (o 100.000 miliardi, se vogliamo usare la scala lunga) siamo passati a 105 trilioni. La cifra in posizione 100 trilioni \u00e8 un 6, almeno secondo <a href=\"https:\/\/www.storagereview.com\/review\/breaking-records-storagereviews-105-trillion-digit-pi-calculation\">il gruppo di lavoro<\/a> che ha superato il proprio precedente record. Il tutto in due mesi e mezzo di computazione.<\/p>\n<p>La cosa pi\u00f9 interessante \u00e8 che a quanto sembra il collo di bottiglia non \u00e8 tanto la CPU, anche se hanno comunque usato un sistema 128-core dual-processor con 1 tera e mezzo di DRAM (ma che girava Windows Server 2022&#8230;), quanto lo spazio per salvare i dati! I 36 moduli SSD della Solidigm possono contenere un petabyte di spazio&#8230; (inutile dire che quelli di Solidigm si sono subito <a href=\"https:\/\/news.solidigm.com\/en-WW\/235709-another-serving-of-pi-solidigm-ssds-help-calculate-new-world-record\">fatti pubblicit\u00e0<\/a>!)<\/p>\n<p>Per i curiosi, il calcolo \u00e8 stato eseguito applicando l&#8217;<a href=\"https:\/\/it.wikipedia.org\/wiki\/Algoritmo_di_Chudnovsky\">algoritmo di Chudnovsky<\/a>: se avete letto il mio <a href=\"https:\/\/amzn.to\/3IGUwWP\">Chiamatemi Pi Greco<\/a> sapete che alla fine del millennio i fratelli Chudnovsky hanno implementato una delle mistiche formule di Ramanujan e generato alcuni record per mezzo di un computer &#8220;casalingo&#8221;, nel senso che era stato assemblato nelle varie stanze di casa loro.<\/p>\n<p><small>(immagine di  lxlalexlxl da <a href=\"https:\/\/openclipart.org\/detail\/298417\/pi-number-contour-text\">OpenClipArt<\/a>)<\/small><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ma in un certo senso c&#8217;\u00e8 lo sponsor&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":3,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"federated","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[976,214],"tags":[],"class_list":["post-28568","post","type-post","status-publish","format-standard","hentry","category-matelight-2024","category-matematica_light"],"modified_by":".mau.","jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p6hcSh-7qM","jetpack-related-posts":[{"id":35376,"url":"https:\/\/xmau.com\/wp\/notiziole\/2026\/01\/07\/ancora-un-record-per-le-cifre-di-pi-greco\/","url_meta":{"origin":28568,"position":0},"title":"Ancora un record per le cifre di pi greco","author":".mau.","date":"2026-01-07","format":false,"excerpt":"314.000 miliardi di cifre decimali calcolate in 110 giorni","rel":"","context":"In &quot;mate-light 2026&quot;","block_context":{"text":"mate-light 2026","link":"https:\/\/xmau.com\/wp\/notiziole\/category\/matematica_light\/matelight-2026\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":28684,"url":"https:\/\/xmau.com\/wp\/notiziole\/2024\/04\/03\/%cf%80%cf%80%cf%80%cf%80-e-un-numero-naturale\/","url_meta":{"origin":28568,"position":1},"title":"\u03c0^(\u03c0^(\u03c0^\u03c0)))  \u00e8 un numero naturale?","author":".mau.","date":"2024-04-03","format":false,"excerpt":"quasi certamente no, ma nessuno lo sa dimostrare, e probabilmente nessuno lo sapr\u00e0 per secoli","rel":"","context":"In &quot;mate-light-2024&quot;","block_context":{"text":"mate-light-2024","link":"https:\/\/xmau.com\/wp\/notiziole\/category\/matematica_light\/matelight-2024\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/04\/pi-tetrated.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/04\/pi-tetrated.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2024\/04\/pi-tetrated.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":11153,"url":"https:\/\/xmau.com\/wp\/notiziole\/2015\/03\/15\/quizzino-della-domenica-pi-greco-in-base-due\/","url_meta":{"origin":28568,"position":2},"title":"Quizzino della domenica: pi greco in base due","author":".mau.","date":"2015-03-15","format":false,"excerpt":"Come sapete tutti, pi greco \u00e8 un po' pi\u00f9 di 3,1415926. Ma naturalmente questo funziona solo in base 10: se lo scrivessimo in un'altra base potremmo avere un risultato diverso. Per esempio, in base 2 le prime cifre di pi greco dovrebbero essere (se ho copiato bene...) 11,001001000011111101101010100010001000010110100011000010001101001100010... Sorge ora\u2026","rel":"","context":"In &quot;giochi&quot;","block_context":{"text":"giochi","link":"https:\/\/xmau.com\/wp\/notiziole\/category\/giochi\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":29939,"url":"https:\/\/xmau.com\/wp\/notiziole\/2024\/10\/30\/ma-a-che-serve-calcolare-i-primi-di-mersenne\/","url_meta":{"origin":28568,"position":3},"title":"Ma a che serve calcolare i primi di Mersenne?","author":".mau.","date":"2024-10-30","format":false,"excerpt":"A niente. E allora?","rel":"","context":"In &quot;mate-light-2024&quot;","block_context":{"text":"mate-light-2024","link":"https:\/\/xmau.com\/wp\/notiziole\/category\/matematica_light\/matelight-2024\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":22146,"url":"https:\/\/xmau.com\/wp\/notiziole\/2021\/05\/08\/le-gioie-del-pi-greco-libro\/","url_meta":{"origin":28568,"position":4},"title":"Le gioie del pi greco (libro)","author":".mau.","date":"2021-05-08","format":false,"excerpt":"Tantissime cose su pi greco!","rel":"","context":"In &quot;rec-2021&quot;","block_context":{"text":"rec-2021","link":"https:\/\/xmau.com\/wp\/notiziole\/category\/recensioni\/recensioni-2021\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/xmau.com\/wp\/notiziole\/wp-content\/uploads\/sites\/6\/2021\/05\/9788811592884.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":18364,"url":"https:\/\/xmau.com\/wp\/notiziole\/2019\/03\/17\/quizzino-della-domenica-operazioni-con-pi-greco\/","url_meta":{"origin":28568,"position":5},"title":"Quizzino della domenica: Operazioni con pi greco","author":".mau.","date":"2019-03-17","format":false,"excerpt":"Come sapete, in inglese \"pi\" (il pi greco) si pronuncia come \"pie\" (torta). Risolvete l'operazione qui sotto, dove PI e PIE sono numeri rispettivamente di due e tre cifre. A lettera uguale corrisponde numero uguale, e ovviamente P non pu\u00f2 essere 0. 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