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
6956249Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1269541693575101271856.8old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-27Oliver KruseD6C413B4D1FF3D9D1215789953
Verified2019-02-09ATHD6C413B4D1FF3D9D1692865053
History
DateUserTypeResult
2023-12-30Stef42NF-PM1
B1=577000, B2=1280664000
2019-02-09ATHC-PRP
M6956249/126954169357510127 : D6C413B4D1FF3D9D
PRP: Verified
PRP without proof (not generated)
2018-01-27Oliver KruseC-PRP
M6956249/126954169357510127 : D6C413B4D1FF3D9D
PRP: Verified
PRP without proof (not generated)