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
8318581
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
156172873322391443.8old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-11Oliver Kruse9F6BCD3AC0790C5C1305524753
Verified
PRP without proof (not generated)
2020-04-18marssystems9F6BCD3AC0790C5C1207573953
History
DateUserTypeResult
2024-06-10Stef42NF-PM1B1=1375000, B2=2725257990
2020-04-18marssystemsC-PRPM8318581/15617287332239 : 9F6BCD3AC0790C5C
2018-10-11Oliver KruseC-PRPM8318581/15617287332239 : 9F6BCD3AC0790C5C