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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
72072997Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 660000
B2 = 13035000
LL
StatusDateUserResidueShift
Verified2015-11-09arnaud870D45E7C8C2DEFE8147594
Verified2025-04-05-Anonymous-870D45E7C8C2DEFE23302644
Verified2025-04-08Poao870D45E7C8C2DEFE33974969
History
DateUserTypeResult
2025-04-08PoaoC-LL
870D45E7C8C2DEFE
2025-04-05-Anonymous-C-LL
870D45E7C8C2DEFE
2015-11-09arnaudC-LL
870D45E7C8C2DEFE
2015-03-29NickOfTimeNF
no factor from 2^74 to 2^75
2014-07-23PascalBieriNF-PM1
B1=660000, B2=13035000
2014-07-03NickOfTimeNF
no factor from 2^73 to 2^74
2014-07-03NickOfTimeNF
no factor from 2^72 to 2^73
2014-07-01Architects CubedNF
no factor from 2^71 to 2^72
2013-04-18-Anonymous-NF
no factor from 2^70 to 2^71
2012-09-30RobertNNF
no factor from 2^69 to 2^70
2010-05-19GrunwalderGIMPNF
no factor from 2^68 to 2^69
2010-05-18GrunwalderGIMPNF
no factor from 2^67 to 2^68
2010-05-17GrunwalderGIMPNF
no factor from 2^66 to 2^67
2010-05-17GrunwalderGIMPNF
no factor from 2^65 to 2^66
2010-05-12Bassam Abdul-BakiNF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64