Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
20991017Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 245000
B2 = 4287500
LL
StatusDateUserResidueShift
Verified2004-02-07Daval Davis0728443BEF0AF11C470746
Verified2008-06-14Penny Black W0728443BEF0AF11C20553971
History
DateUserTypeResult
2021-11-05-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-19-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-05Sid & AndyNF
no factor from 2^70 to 2^71
2017-11-28YxinityNF
no factor from 2^69 to 2^70
2017-10-12VictordeHollanderNF
no factor from 2^68 to 2^69
2017-05-02ramgeisNF
no factor from 2^67 to 2^68
2015-04-06NRNF
no factor from 2^66 to 2^67