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
6959257Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
122486820383931443.5old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-22ATH5F46049CA986C5BB1255554053
Verified2019-02-11kkmrkkblmbrbk5F46049CA986C5BB1145033153
History
DateUserTypeResult
2023-12-30Stef42NF-PM1
B1=577000, B2=1280664000
2019-02-11kkmrkkblmbrbkC-PRP
M6959257/12248682038393 : 5F46049CA986C5BB
PRP: Verified
PRP without proof (not generated)
2018-01-22ATHC-PRP
M6959257/12248682038393 : 5F46049CA986C5BB
PRP: Verified
PRP without proof (not generated)