Results so far. Here are the (up to) 10 largest factors (of at least 60 digits) found by ECM so far in 2020 (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):
| digits | factor | from | B1 | sigma | date | who |
| 69 | 742294492322737640765835058587725517897783468628162904847821734425391 | 11281+7281 | 260e6 | 1:1066342235 | 16 Mar 2020 | R. Propper |
| 67 | 2133853262669464326609494890084969873852117020264697439564525923033 | 52428747+1 | 850e6 | 11812172473002880345 | 24 Apr 2020 | yoyo@home/Ben |
| 67 | 1562692644172831910698894852204981908438761422548517899695476786511 | 22953-1 | 850e6 | 6071148668037578423 | 01 Feb 2020 | R. Propper |
| 67 | 1018841800924329930671590370281656384822482863478547057611324020601 | 4460+3460 | 260e6 | 1:3352090683 | 17 Mar 2020 | R. Propper |
| 66 | 906533749251005245151122204670351312590267105760052002862150546121 | 10337-1 | 1.2e9 | 1:2288012419 | 20 Feb 2020 | S. Wagstaff |
| 65 | 20126633732856273272993747262506300132661729108094476327117047969 | 22749-1 | 850e6 | 4817957806046605670 | 28 Jan 2020 | R. Propper |
| 65 | 10783519111876599782570681731617294711255159689732908342971391267 | 867*12867-1 | 260e6 | 9454560319835557099 | 13 Jan 2020 | yoyo@home/Crashtest |
| 64 | 5079823558172765116118316979113656671643883828848314543336508461 | 22206+1 | 850e6 | 7194998489115310453 | 28 Mar 2020 | yoyo@home/Henric |
| 64 | 3209681398615442534074101309775547494759396015886801499169945861 | 101290+1 | 850e6 | 1524063036262106663 | 14 Feb 2020 | yoyo@home/Crashtest |
| 64 | 1711486027885574808307568743879047489913370807732220743064792769 | 900*8900-1 | 260e6 | 18201640015007367725 | 02 May 2020 | yoyo@home/Beyond |
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).
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