|
History of Cunningham Chain length 7
|
| Initial prime number |
Digits |
When |
Discoverer |
| 1st kind |
| 82466536397303904 • 1171# − 1 |
509 |
1 Jan 2016 |
Andrey Balyakin |
| 3931472185692005387730944 • 857# − 1 |
381 |
25 May 2015 |
Andrey Balyakin |
| 14317181455772 • 853# − 1 |
367 |
24 Jul 2014 |
Serge Batalov, NewPGen, OpenPFGW |
| 162597166369 • 827# − 1 |
356 |
Jul 2010 |
Dirk Augustin, NewPGen, OpenPFGW |
| 1178137903623 • 661# − 1 |
291 |
Jul 2008 |
Dirk Augustin, NewPGen, OpenPFGW |
| 14180848107 • 487# − 1 |
211 |
Nov 2004 |
Dirk Augustin, NewPGen, OpenPFGW |
| 472063086 • 383# + 1236845609 |
165 |
May 2004 |
Torbjörn Alm, Jens Kruse Andersen, Primo |
| 406605710992 • 349# − 1 |
153 |
Jun 2002 |
Dirk Augustin, NewPGen, OpenPFGW |
| 1953370903 • 151# − 1 |
69 |
Jun 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 460668119835 • 2101 − 1 |
43 |
Dec 1999 |
Paul Jobling |
| 27215953890276787 • 37# • 23 − 1 |
31 |
Nov 1999 |
Dirk Augustin, Paul Jobling, Primeform |
| 27215953890276787 • 37# • 23 − 1 |
31 |
Nov 1999 |
Dirk Augustin, Paul Jobling, Primeform |
| 2nd kind |
| 25802590081726373888 • 1033# + 1 |
453 |
17 Dec 2015 |
Andrey Balyakin |
| 4746015693360635904 • 761# + 1 |
337 |
10 Mar 2016 |
Andrey Balyakin |
| 535617118876 • 727# + 1 |
313 |
6 Dec 2015 |
Oscar Östlin, NewPGen, OpenPFGW |
| 668302064 • 593# + 786153598231 |
251 |
May 2008 |
Thomas Wolter, Jens Kruse Andersen, Primo |
| 414792720846 • 557# + 1 |
237 |
Mar 2006 |
Dirk Augustin, NewPGen, OpenPFGW |
| 782350985 • 503# + 2189997811 |
218 |
Feb 2006 |
Jens Kruse Andersen, Primo |
| 2310290388 • 283# + 1 |
128 |
Sep 2001 |
Dirk Augustin, NewPGen, OpenPFGW |
| 1701815519 • 277# + 1 |
123 |
Aug 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 843616025 • 193# + 1 |
87 |
Jul 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 666325605 • 260 + 1 |
27 |
Oct 1999 |
Dirk Augustin, Proth |
