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
155440847Composite: proven not-prime with PRP test
TF
No factors below 277
TF target 278
P-1
B1 = 1275000
B2 = 774079020
PRP
StatusDateUserResidueShiftTypeBase
Verified2024-10-29Bully4F230CF938830E477417016613
History
DateUserTypeResult
2025-09-13Architects CubedNF
no factor from 2^76 to 2^77
2024-10-29PoaoCERT
PRP Certification
CERT proof power = 10
Proof certified good
2024-10-29BullyC-PRP
4F230CF938830E47
PRP proof power = 10
PRP: Verified
Proof certified good
2024-08-18Luke DurantNF-PM1
B1=1275000, B2=774079020
2024-08-13SRBaseNF
no factor from 2^75 to 2^76
2023-02-18SRBaseNF
no factor from 2^74 to 2^75
2021-11-15SRBaseNF
no factor from 2^73 to 2^74
2017-09-07Klaus NordmannNF
no factor from 2^72 to 2^73
2017-09-06BaltinNF
no factor from 2^71 to 2^72
2017-09-01ZbiGNF
no factor from 2^70 to 2^71
2017-08-19La GüiraNF
no factor from 2^69 to 2^70
2016-07-10DerekNF
no factor from 2^68 to 2^69
2016-05-06DerekNF
no factor from 2^67 to 2^68
2015-04-11guruNF
no factor from 2^66 to 2^67
2013-02-03Charles A. MorrisNF
no factor from 2^65 to 2^66
2011-01-23runeskNF
no factor from 2^64 to 2^65