Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
120691981Composite: proven not-prime with PRP test
TF
No factors below 277
TF target 277
P-1
B1 = 542000
B2 = 19405575
PRP
StatusDateUserResidueShiftTypeBase
Verified2024-02-02belezbarD1E6FC44ADBD4E858493311713
History
DateUserTypeResult
2024-02-02WeakForceBosonCERT
PRP Certification
CERT proof power = 8
Proof certified good
2024-02-02belezbarC-PRP
D1E6FC44ADBD4E85
PRP proof power = 8
PRP: Verified
Proof certified good
2023-12-05belezbarNF-PM1
B1=542000, B2=19405575
2022-06-20TheJudgerNF
no factor from 2^76 to 2^77
2022-03-19LordJuliusNF
no factor from 2^63 to 2^64
2021-07-211997rj7NF
no factor from 2^75 to 2^76
2021-07-18FlaukrotistNF
no factor from 2^74 to 2^75
2021-07-16gcardonaNF
no factor from 2^73 to 2^74
2020-11-13SRBaseNF
no factor from 2^72 to 2^73
2015-07-08endless_mikeNF
no factor from 2^71 to 2^72
2015-07-08endless_mikeNF
no factor from 2^70 to 2^71
2015-07-08endless_mikeNF
no factor from 2^69 to 2^70
2015-07-08endless_mikeNF
no factor from 2^68 to 2^69
2015-02-07caddrNF
no factor from 2^67 to 2^68
2013-09-14E.LechnerNF
no factor from 2^66 to 2^67
2012-08-06oodairaNF
no factor from 2^65 to 2^66
2010-10-19Thomas StorkNF
no factor from 2^64 to 2^65