2N-1 Cunningham numbers (Lehigh local)


Curve counts in the original mersenne.org file were replaced by:

t50 COMPLETE.

(Format adapted from Garo tables on mersenneforum.)

Mersenne Numbers (2N-1), no known factors

Digits in factor505560
Bound #144,000,000110M260M (use GMP-ECM)
Curves to test1930046000lots
1061DoneDonea few

Mersenne Numbers (2N-1), some known factors (focus: large SNFS candidates)

Digits in factortest tn toDigits1st digits
Bound #1find primeof comp. of composite
Curves to testwith n digitscofactorcofactor
929t55 214 10249763180
947t55 217
985t55 196
9912t50 264 26509301895
1007t65 254 42215615995
1009t65 204
1019 t65 246 44323533148
1031 t65 299 25611528652
1037 t65 289 48726941814
1061 (above) t65 320 24707306311
1067 t65 260 30422060356
1069 t65 256 36181037329
1081 t65 251 43256444045
1093 t65 294 51145723534
1109 t65 301 26235893929
1111 t65 278 11706163682
1117 t65 332 33204935897
1123 t65 321 14658952057
1129 2t65 327 25821185510
11352t65 225
11472t65 263 48943760685
11512t65242 51300791318
11532t65 331 53963193785
11592t65309 62085268286
11712t65 342 20879213751
11772t65 255 27459735369
11832t65261 43843420361
11932t65 355 11054539166
11992t65 314 15507653258


prime95 Factors found (selected)



M971 has a factor: 23917104973173909566916321016011885041962486321502513*,**
M997 has a factor: 167560816514084819488737767976263150405095191554732902607*,**
* indicates first known factor.
** indicates factorization of the number is now complete.

(Last Mersenne.org update: April 11, 2007)


ECMNET Factors found at EPFL



M937 factored p59 = 46654722984595033623595915319018639089714063407438899506169
M953 factored p60 = 210604142476977747806569755290105170291449495120790656457721

2010 factors using pcs



M1051 factored p63 = 215738012818441827932337543036174144558274385301234576636299249
M1073 factored p66 = 694217535399847678048415113186577758507635822252803808473674680017
M1087 factored p61 = 2664797814058212286560533454960446792210016180875809243599817
M1139 factored p68 = 12947560801881275212486900476122097688373975262784709656768032387833
M1163 factored p73 = 1042816042941845750042952206680089794415014668329850393031910483526456487
M1181 factored p73 = 1808422353177349564546512035512530001279481259854248860454348989451026887 current record size
M1187 factored p63 = 153327833285998453874202767942570343649971393640068204571694369

2010 factors using network of PS3s



M961 factored p61 = 8685373022907062443109907561762261051459356481790933999405609
M1115 factored p55 = 7866820287217429790532545104013632296537532272087818471 Zimmermann

added November