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Results so far. Here are the (up to) 10 largest factors (of at least 60 digits) found by ECM so far in 2016 (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):

digits factor from B1 sigma date who
751314580029663621913390051081023672272206743156373737353788050319706142734393541101-130e9214383123620 Apr 2016R. Propper
73304590099396028614949714726870530525803186063978422761414025198252329418711311-1850e6191533140207 Feb 2016R. Propper
731282647975791177843679868451592215720120840718839395753277055866543942203A(4788,10775)7.6e91:379639684725 Nov 2016R. Propper
709926316454628557863038469663879950361774982225520836326372945706841117569109-17.6e9273883407227 Feb 2016R. Propper
707525032929675728079188975968262692873428304834022809537969894340478891499113-13e10358642830721 Feb 2016R. Propper
697306077492283389237096136973478884336502871329573781652896687806813298*10195+93e944369222406 Oct 2016S. Batalov
692877477265305444921756774578909148368293755332125013317689530623196411433101-130e9157945172331 Mar 2016R. Propper
6849068013780183146162343858560572222517866392111470976981081833851129163191-17.6e9374487510113 Mar 2016R. Propper
6617913454438079081426041661729666909626668548539930152779129940523312323-1400e63809215407 Jan 2016B. Dodson
6472442604769017510844822584057898541902056848572973901200727177212801157-1850e6263854342625 Mar 2016R. Propper

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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