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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
74518981Composite: proven not-prime with PRP test
TF
No factors below 275
TF target 274
P-1
B1 = 685000
B2 = 14213750
LL
StatusDateUserResidueShift
Unverified2016-10-09youliE343FA9FF749CF__14119
PRP
StatusDateUserResidueShiftTypeBase
Verified2024-11-28Luke DurantF2256A78C6AC860D013
History
DateUserTypeResult
2024-11-28freiburgerCERT
PRP Certification
CERT proof power = 9
Proof certified good
2024-11-28Luke DurantC-PRP
F2256A78C6AC860D
PRP proof power = 9
PRP: Verified
Proof certified good
2016-10-09youliC-LL
E343FA9FF749CF__
2016-07-08-Anonymous-NF
no factor from 2^74 to 2^75
2016-04-02Mark RoseNF
no factor from 2^57 to 2^64
2015-03-19apocalypseNF-PM1
B1=685000, B2=14213750, E=6
2014-09-07Bill StaffenNF
no factor from 2^71 to 2^74
2014-09-03David HruskaNF
no factor from 2^70 to 2^71
2013-01-29svistakNF
no factor from 2^69 to 2^70
2013-01-29svistakNF
no factor from 2^65 to 2^66
2010-08-28-Anonymous-NF
no factor from 2^68 to 2^69
2010-08-25-Anonymous-NF
no factor from 2^67 to 2^68
2010-07-15-Anonymous-NF
no factor from 2^66 to 2^67
2010-07-10unconnectedNF
no factor from 2^65 to 2^66
2010-07-10unconnectedNF
no factor from 2^64 to 2^65