|
History of Cunningham Chain length 4
|
| Initial prime number |
Digits |
When |
Discoverer |
| 1st kind |
| 93003628384 • 10111# − 1 |
4362 |
16 Feb 2025 |
Serge Batalov, NewPGen, OpenPFGW |
| 158514759928 • 8501# − 1 |
3640 |
22 Oct 2023 |
Frank Doornink, mtsieve, OpenPFGW |
| 13720852541 • 7877# − 1 |
3384 |
31 Oct 2016 |
Michael Angel, Dirk Augustin, NewPGen, OpenPFGW |
| 28961560189 • 7517# − 1 |
3217 |
9 Sep 2016 |
Michael Angel, Dirk Augustin, NewPGen, OpenPFGW |
| 375967981369 • 6907# − 1 |
2971 |
31 May 2017 |
Oscar Östlin, NewPGen, OpenPFGW |
| 354362289656 • 6907# − 1 |
2971 |
31 May 2017 |
Oscar Östlin, NewPGen, OpenPFGW |
| 285993323512 • 6907# − 1 |
2971 |
31 May 2017 |
Oscar Östlin, NewPGen, OpenPFGW |
| 28904981097 • 6703# − 1 |
2882 |
20 Mar 2015 |
Serge Batalov, NewPGen, OpenPFGW |
| 1249097877 • 6599# − 1 |
2835 |
Feb 2011 |
Michael Angel, NewPGen, OpenPFGW |
| 119184698 • 5501# − 1 |
2354 |
Jun 2005 |
Jiong Sun, NewPGen, OpenPFGW |
| 2554760770 • 3733# − 1 |
1605 |
2010 |
Michael Angel, NewPGen, OpenPFGW |
| 1707223185 • 3049# − 1 |
1308 |
Oct 2002 |
Michael Angel, Dirk Augustin, Paul Jobling, NewPGen, OpenPFGW |
| 742155874 • 2381# − 1 |
1019 |
Aug 2000 |
Michael Angel, Dirk Augustin, Paul Jobling, NewPGen, OpenPFGW |
| 35443364 • 1013# − 1 |
429 |
10 Jun 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 2nd kind |
| 49325406476 • 9811# + 1 |
4233 |
10 Jul 2019 |
Oscar Östlin, NewPGen, OpenPFGW |
| 259056632602 • 7699# + 1 |
3315 |
2 Jun 2019 |
Serge Batalov, NewPGen, OpenPFGW |
| 17285145467 • 6977# + 1 |
3005 |
26 Jul 2016 |
Michael Angel, Dirk Augustin, NewPGen, OpenPFGW |
| 35598436282 • 6701# + 1 |
2878 |
19 Mar 2015 |
Serge Batalov, NewPGen, OpenPFGW |
| 96557970905 • 5303# + 1 |
2271 |
4 Aug 2019 |
Ken Davis, Paul Underwood, NewPGen, PrimeForm_egroup, OpenPFGW |
| 86426205080 • 5303# + 1 |
2271 |
4 Aug 2019 |
Ken Davis, Paul Underwood, NewPGen, PrimeForm_egroup, OpenPFGW |
| 66538965843 • 5303# + 1 |
2271 |
21 Apr 2019 |
Ken Davis, Paul Underwood, NewPGen, PrimeForm_egroup, OpenPFGW |
| 62211382997 • 5303# + 1 |
2271 |
21 Apr 2019 |
Ken Davis, Paul Underwood, NewPGen, PrimeForm_egroup, OpenPFGW |
| 60903543000 • 5303# + 1 |
2271 |
21 Apr 2019 |
Ken Davis, Paul Underwood, NewPGen, PrimeForm_egroup, OpenPFGW |
| 630698711 • 4933# + 1 |
2105 |
2010 |
Michael Angel, NewPGen, PrimeForm |
| 1453501013 • 4127# + 1 |
1770 |
Mar 2005 |
Jiong Sun, NewPGen, PrimeForm |
| 153344568 • 4001# + 1 |
1711 |
Apr 2004 |
Jiong Sun, NewPGen, PrimeForm |
| 131853904032 • 3061# + 1 |
1313 |
Jan 2003 |
David Broadhurst, PrimeForm |
| 356701232 • 3041# + 1 |
1303 |
Sep 2002 |
Michael Angel, Dirk Augustin, Paul Jobling, NewPGen, OpenPFGW |
| 92406026 • 1187# + 1 |
506 |
17 Jun 2000 |
Dirk Augustin, NewPGen, OpenPFGW |
| 164285535 • 2972 + 1 |
301 |
Jan 2000 |
Dirk Augustin, Proth |
| 723592485 • 2770 + 1 |
241 |
Oct 1999 |
Dirk Augustin, Proth |
