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
12202291Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
100984451995271443.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-02-11ATHE4CC03EB7AE7A92A11110844653
History
DateUserTypeResult
2022-02-11Ben DeloCERT
PRP Certification
Proof certified good
2022-02-11ATHC-PRP
M12202291/10098445199527 : E4CC03EB7AE7A92A
PRP proof power = 8
PRP: Verified
Proof certified good
2022-02-06nordiNF-PM1
B1=400000, B2=343450800
2022-01-25nordiNF-PM1
B1=400000