Results so far. Here are the (up to) 10 largest factors (of at least 60 digits) found by ECM so far in 2023 (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, 2021, 2022):
| digits | factor | from | B1 | sigma | date | who |
| 78 | 237764772671592361008610428824687115113259752974003542659353963932594233110921 | 22246+1 | 25e9 | A=263...882 | 27 Oct 2023 | yoyo/Moor |
| 77 | 79632490363499039771085988101713956873090985066875428007643233693630470417031 | 6395+5395 | 26e7 | 0:8084257192518901305 | 12 May 2023 | yoyo/Favebook |
| 73 | 1430403426780323194492752002166142864938826392243645386060677763492218669 | 14380+80143 | 26e7 | 5367927581756745694 | 18 Jun 2023 | yoyo/ccurtis0 |
| 72 | 357718321992157465741152195293145943698198324175849075630252706154052301 | 5593+1 | 850e6 | 1:1723298129 | 24 May 2023 | R. Propper |
| 71 | 25900548863672930451831053961363718303143744545008210388536104834284881 | 101086-1 | 7.6e9 | A=101...634 | 18 Jul 2023 | yoyo/P. Bailey |
| 71 | 14982766966621217481855973208150024404648697584065833785058032220564773 | Cullen Woodall GW_4_822M | 260e6 | 1435114108434929273 | 11 Oct 2023 | yoyo@home/Patrick Manne |
| 70 | 2060314965293145742122992274752295493859728631454387662658400044989633 | 22278 + 1 | 7.6e9 | 13185458298193025446 | 23 May 2023 | yoyo/n3Ro |
| 70 | 1044845694645532615440579579338650347038975456315052342814839763722781 | 102940-1 | 2.9e9 | A=386...190 | 16 Feb 2023 | yoyo/G. Bradshaw |
| 69 | 264526812513178623821911492789943087584745603638565710907628298393513 | 41443+31443 | 850e6 | 1:4066700762 | 26 Jan 2023 | R. Propper |
| 67 | 7118712195058078015963765386322444134285243628705404423063643507397 | 22222+1 | 7.6e9 | 14995362013351480992 | 07 Jan 2023 | S. Bonzanini |
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.