Record history of Cunningham Chain length 9

first member Digits When? Discoverer

1st kind
 
553374939996823808 ⋅ 593# - 1
260
10 Mar 2016
Balyakin
40912747216912409971130368 ⋅ 401# - 1
190
17 Dec 2015
Balyakin
2630705556345975695872 ⋅ 401# - 1
186
15 May 2015
Balyakin
65728407627 ⋅ 431# - 1
185
Aug 2005
Augustin, NewPGen, OpenPFGW
2093307780 ⋅ 127# - 1
58
Apr 2001
Augustin, NewPGen, OpenPFGW

2nd kind
 
173129832252242394185728 ⋅ 401# + 1
187
15 May 2015
Balyakin
182887101390961871050645934589918687746535370612015546956692154622371784133412186 ⋅ 223# + 1
167
23 Jul 2013
Primecoin
326715355352350972893381745676353435171008659029059646631240926699147385033998869 ⋅ 193# + 1
158
9 Jul 2013
Primecoin
745395266 ⋅ 211# + 1503602101
94
May 2004
Alm, Andersen, Primo
1061169280 ⋅ 103# + 1
50
Dec 2000
Augustin, NewPGen, OpenPFGW
43105142 ⋅ 73# + 1
37
Oct 2000
Augustin, NewPGen, OpenPFGW