The ECMNET Project

[introduction]   [download GMP-ECM]   [candidates]   [optimal parameters]   [Cunningham project]   [related software]  
[champions for ECM, P-1, P+1]   [NFS@home]   [mersenneforum] [GMP-ECM builds on Debian] [coverage] [coverage with gpu]
News:

Results so far. Here are the (up to) 10 largest factors (of at least 60 digits) found by ECM so far in 2021 (see also the all-times top-50 table, and the top ten from 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020):

digits factor from B1 sigma date who
74 29061871024474524652460048148671349817057591121446211165236889497476421553 21429+1 260e6 16049588211814812728 10 Feb 2021 R. Propper
74 25707943518696221194354398472561375355836712931411426198630128562025289803 A(4788,12584) 260e6 1:1625299226 31 Mar 2021 R. Propper
74 18578952791805024063648520594605617439024416722119293963558844725936088811 A(4788,12616) 850e6 1:3196319201 16 Nov 2021 R. Propper
71 32823879912258735727626372991309710431020327877147706439666534226483113 8316+7316 110e6 1:??? 22 Apr 2021 J. Becker
71 11988354452101698103039233924139287094105498100825117049000570758791159 3757+1 1.7e9 1:34498279 19 Jul 2021 S. Wagstaff
71 11860870995568023527862492777262548902101802946469928865146286753404813 22914+1 1.6e9 1:848418822 20 Sep 2021 S. Wagstaff
70 4702574864356903668328925230483249938419748952832641483390255334999479 5493-1 13e8 1:3612551401 04 Jan 2021 S. Wagstaff
70 2790185010398773029145576016481051849652256713736325440896142184620821 22682+1 2.4e9 1:1903091732 14 Aug 2021 S. Wagstaff
69 683802217606094509460359945174630997716878924606013194220815953901277 22822+1 18e8 1:3838493405 01 Mar 2021 S. Wagstaff
69 457309376061341968858969907539927424797564127673204762828701146483601 22390+1 16e8 1:195128836 09 Jan 2021 S. Wagstaff

ECMNET Newsletters: number 1 (13 Feb 1998), number 2 (15 Mar 1998), number 3 (17 Apr 1998), number 4 (15 May 1998), number 5 (18 June 1998), number 6 (15 July 1998), number 7 (17 August 1998), number 8 (17 September 1998), number 9 (16 October 1998), number 10 (23 November 1998), number 11 (17 December 1998), number 12 (19 April 1999), number 13 (16 December 1999).


Please send an email to ``zimmerma [at] loria (dot) fr'' for any remark about this page.


count visitors since July 1, 1999