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
15760399Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
378249577928.5old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-10-05Funky WaddleA247D8D564A13F271497542653
History
DateUserTypeResult
2023-10-05slandrumCERT
PRP Certification
Proof certified good
2023-10-05Funky WaddleC-PRP
M15760399/378249577 : A247D8D564A13F27
PRP proof power = 8
PRP: Verified
Proof certified good
2023-08-26nordiNF-PM1
B1=480000, B2=264402600
2023-07-31nordiNF-PM1
B1=480000