|
History of Cunningham Chain length 5
|
| Initial prime number |
Digits |
When |
Discoverer |
| 1st kind |
| 475676794046977267 • 4679# − 1 |
2019 |
16 Feb 2024 |
Shusuke Kubota; NewPGen; OpenPFGW |
| 31017701152691334912 • 4091# − 1 |
1765 |
3 Nov 2016 |
Andrey Balyakin |
| 3387614923 • 3917# − 1 |
1680 |
15 Oct 2016 |
Michael Angel, Dirk Augustin, NewPGen, OpenPFGW |
| 199949435137 • 3499# − 1 |
1493 |
2 Mar 2016 |
Oscar Östlin, NewPGen, OpenPFGW |
| 361296035282 • 3023# − 1 |
1299 |
25 Mar 2015 |
Serge Batalov, NewPGen, OpenPFGW |
| 96434161264 • 2851# − 1 |
1230 |
27 Aug 2023 |
Serge Batalov, NewPGen, OpenPFGW |
| 257578748915 • 2777# − 1 |
1195 |
11 Mar 2023 |
Ruben Steinberg |
| 205743162092 • 2777# − 1 |
1195 |
11 Mar 2023 |
Ruben Steinberg |
| 4250172704 • 2749# − 1 |
1183 |
Mar 2012 |
Dirk Augustin, NewPGen, OpenPFGW |
| 587027392600 • 2477# − 1 |
1069 |
29 Mar 2016 |
Oscar Östlin, NewPGen, OpenPFGW |
| 533799816556 • 2477# − 1 |
1069 |
2016 |
Oscar Östlin, NewPGen, OpenPFGW |
| 357487161295 • 1693# − 1 |
727 |
May 2008 |
Dirk Augustin, NewPGen, OpenPFGW |
| 148809453 • 1069# − 1 |
460 |
Nov 2001 |
Dirk Augustin, NewPGen, OpenPFGW |
| 828114253 • 991# − 1 |
422 |
Aug 2001 |
Markus Frind, NewPGen, OpenPFGW |
| 504856309 • 953# − 1 |
407 |
Aug 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 427383180 • 797# − 1 |
339 |
Jul 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 1217763452 • 601# − 1 |
257 |
20 Jun 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 206262090 • 479# − 1 |
207 |
7 Jun 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 463419585 • 2353 − 1 |
115 |
Mar 2000 |
Dirk Augustin, NewPGen, Proth |
| 96952995 • 2258 − 1 |
86 |
Dec 1999 |
Dirk Augustin, Proth |
| 9006546615 • 2223 − 1 |
78 |
Nov 1999 |
Paul Jobling |
| 2nd kind |
| 181439827616655015936 • 4673# + 1 |
2018 |
8 Nov 2016 |
Andrey Balyakin |
| 6413732664 • 3797# + 1 |
1630 |
29 Sep 2016 |
Michael Angel, Dirk Augustin, NewPGen, OpenPFGW |
| 646737879652976640 • 3559# + 1 |
1535 |
10 Mar 2016 |
Andrey Balyakin |
| 26483492454758573330432 • 3109# + 1 |
1342 |
17 Dec 2015 |
Andrey Balyakin |
| 56185437312 • 3001# + 1 |
1288 |
21 Mar 2015 |
Serge Batalov, NewPGen, OpenPFGW |
| 2658132486528 • 2969# + 1 |
1279 |
1 Jul 2017 |
Oscar Östlin, NewPGen, OpenPFGW |
| 1413951139648 • 2969# + 1 |
1279 |
1 Jul 2017 |
Oscar Östlin, NewPGen, OpenPFGW |
| 80670856865 • 2677# + 1 |
1140 |
Jan 2011 |
Michael Angel, NewPGen, OpenPFGW |
| 45008010405 • 2621# + 1 |
1116 |
Jul 2010 |
David Broadhurst, NewPGen, OpenPFGW |
| 1719674368 • 1447# + 1 |
613 |
Nov 2004 |
Dirk Augustin, NewPGen, OpenPFGW |
| 496391760 • 1277# + 325305140161 |
540 |
Sep 2004 |
Jens Kruse Andersen, Primo |
| 51946113 • 1193# + 1 |
509 |
Feb 2002 |
Dirk Augustin, NewPGen, OpenPFGW |
| 518179995 • 2308 + 1 |
102 |
Jan 2000 |
Dirk Augustin, Proth |
| 392651625 • 2222 + 1 |
76 |
Oct 1999 |
Dirk Augustin, Proth |
