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
12566627Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1806578297531237.4old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-04-20XZT79CC21F1F62342061516510853
History
DateUserTypeResult
2022-04-20AerowCERT
PRP Certification
Proof certified good
2022-04-20XZTC-PRP
M12566627/180657829753 : 79CC21F1F6234206
PRP proof power = 8
PRP: Verified
Proof certified good
2022-04-17nordiNF-PM1
B1=400000, B2=428459850
2022-04-15nordiNF-PM1
B1=400000