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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MnDetails
7931519
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
15863039823.9old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-06-09storm5510B3974E6799C41FDF1486409553
Verified
PRP without proof (not generated)
2019-11-25arnaudB3974E6799C41FDF1467054953
History
DateUserTypeResult
2024-02-05Stef42NF-PM1B1=950000, B2=1968826860
2019-11-25arnaudC-PRP
M7931519/15863039 : B3974E6799C41FDF
2018-06-09storm5510C-PRP
M7931519/15863039 : B3974E6799C41FDF