|
History of Cunningham Chain length 15
|
| Initial prime number |
Digits |
When |
Discoverer |
| 1st kind |
| 14354792166345299956567113728 • 43# − 1 |
45 |
1 Jan 2016 |
Andrey Balyakin |
| 14366587870229772953764096 • 43# − 1 |
42 |
17 Dec 2015 |
Andrey Balyakin |
| 27353790674175627273118204975428644651729 |
41 |
25 Apr 2014 |
Jaroslaw Wroblewski |
| 662311489517467124375039 |
24 |
29 May 2008 |
Jaroslaw Wroblewski |
| 196426752643710966405599 |
24 |
28 May 2008 |
Jaroslaw Wroblewski |
| 11993367147962683402919 |
23 |
Oct 2004 |
Torbjörn Alm, Jens Kruse Andersen, Primo |
| 4678714760875524493409 |
22 |
Sep 2003 |
Tony Forbes |
| 2nd kind |
| 67040002730422542592 • 53# + 1 |
40 |
10 Mar 2016 |
Andrey Balyakin |
| 25939635974573655642 • 53# + 1 |
39 |
15 May 2015 |
Andrey Balyakin |
| 28320350134887132315879689643841 |
32 |
17 Jun 2008 |
Jaroslaw Wroblewski |
| 71838292723844326926417601 |
26 |
12 Jun 2008 |
Jaroslaw Wroblewski |
| 5830768257311375388822241 |
25 |
10 Jun 2008 |
Jaroslaw Wroblewski |
| 2817673877915370357723841 |
25 |
5 Jun 2008 |
Jaroslaw Wroblewski |
| 105998574608115401372161 |
24 |
26 May 2008 |
Jaroslaw Wroblewski |
| 2 • 15745040405007366603151 − 1 |
23 |
25 May 2008 |
Jaroslaw Wroblewski |
| 54269795934721528591 |
20 |
Sep 1997 |
Tony Forbes |
