Editing RSA numbers (section)

==RSA-250==
RSA-250 has 250 decimal digits (829 bits), and was factored in February 2020 by Fabrice Boudot, Pierrick Gaudry, Aurore Guillevic, Nadia Heninger, Emmanuel Thomé, and Paul Zimmermann. The announcement of the factorization occurred on February 28.

 RSA-250 = 2140324650240744961264423072839333563008614715144755017797754920881418023447
           1401366433455190958046796109928518724709145876873962619215573630474547705208
           0511905649310668769159001975940569345745223058932597669747168173806936489469
           9871578494975937497937

 RSA-250 = 6413528947707158027879019017057738908482501474294344720811685963202453234463
           0238623598752668347708737661925585694639798853367
         × 3337202759497815655622601060535511422794076034476755466678452098702384172921
           0037080257448673296881877565718986258036932062711
The factorisation of RSA-250 utilised approximately 2700 CPU core-years, using a 2.1&nbsp;GHz Intel Xeon Gold 6130 CPU as a reference. The computation was performed with the Number Field Sieve algorithm, using the open source CADO-NFS software.

The team dedicated the computation to [[Peter Montgomery (mathematician)|Peter Montgomery]], an American mathematician known for his contributions to [[computational number theory]] and [[cryptography]] who died on February 18, 2020, and had contributed to factoring RSA-768.<ref>{{cite web |title=&#91;Cado-NFS-discuss&#93; Factorization of RSA-250 |url=https://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/2020-February/001166.html |access-date=2020-02-28 |url-status=dead |archive-url=https://web.archive.org/web/20200228234716/https://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/2020-February/001166.html |archive-date=2020-02-28}}</ref>