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
6914021Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
3275586588971238.3old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-17ATHAB72C52CB2A3A1891515988353
Verified2019-01-22LookASAB72C52CB2A3A1891379653753
History
DateUserTypeResult
2023-12-27Stef42NF-PM1
B1=569000, B2=1280664000
2019-01-22LookASC-PRP
M6914021/327558658897 : AB72C52CB2A3A189
PRP: Verified
PRP without proof (not generated)
2018-01-17ATHC-PRP
M6914021/327558658897 : AB72C52CB2A3A189
PRP: Verified
PRP without proof (not generated)