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

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MnStatusDetails
15002863Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
23089776917652345591961.0old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-07PerigF3D75AAC4C2FCAF01761250953
History
DateUserTypeResult
2023-05-07Khurshid SuyunovCERT
PRP Certification
Proof certified good
2023-05-07PerigC-PRP
M15002863/2308977691765234559 : F3D75AAC4C2FCAF0
PRP proof power = 8
PRP: Verified
Proof certified good
2023-04-20JacobZNF-PM1
B1=578000, B2=550533060
2021-07-26ViliamFNF
no factor from 2^67 to 2^68