Record history of Cunningham Chain length 6

first member Digits When? Discoverer

1st kind
 
2799873605326 ⋅ 2371# - 1
1016
25 Mar 2015
Batalov, NewPGen, OpenPFGW
37488065464 ⋅ 1483# - 1
633
Mar 2010
Augustin, NewPGen, OpenPFGW
1882807711450 ⋅ 1327# - 1
578
21 Jul 2014
Batalov, NewPGen, OpenPFGW
33692909611 ⋅ 977# - 1
417
Oct 2004
Augustin, NewPGen, OpenPFGW
716250935 ⋅ 491# - 1
213
Sep 2001
Augustin, NewPGen, OpenPFGW
620060805 ⋅ 2252 - 1
85
26 Oct 1999
Augustin, Proth
505054485 ⋅ 2154 - 1
56
19 Oct 1999
Augustin, Proth

2nd kind
 
52992297065385779421184 ⋅ 1531# + 1
668
15 May 2015
Balyakin
480112483568 ⋅ 1511# + 1
650
10 Mar 2014
Östlin, NewPGen, OpenPFGW
37783362904 ⋅ 1097# + 1
475
Jun 2006
Augustin, NewPGen, OpenPFGW
703632724 ⋅ 787# + 94265010841
336
Sep 2004
Andersen, Primo
42693782492 ⋅ 739# + 1
318
Sep 2004
Augustin, NewPGen, OpenPFGW
2197316072 ⋅ 647# + 105063678721
279
Sep 2004
Andersen, Primo
6302319587 ⋅ 509# + 1
222
Jan 2003
Chaffey
1056231420 ⋅ 479# + 1
208
Aug 2000
Augustin, NewPGen, OpenPFGW
388562456 ⋅ 331# + 1
142
20 Jun 2000
Augustin, NewPGen, OpenPFGW
2 ⋅ 305372608 ⋅ 271# + 1
120
3 Jun 2000
Augustin, NewPGen, OpenPFGW