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
10309619Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
20619239824.3old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-03-27ANONYMOUS9F5C16A74F46E80B1209605253
Verified2021-02-20XZT9F5C16A74F46E80B1104993053
History
DateUserTypeResult
2021-02-22David KirkbyCERT
PRP Certification
Proof certified good
2021-02-20XZTC-PRP
M10309619/20619239 : 9F5C16A74F46E80B
PRP proof power = 8
PRP: Verified
Proof certified good
2020-03-27ANONYMOUSC-PRP
M10309619/20619239 : 9F5C16A74F46E80B
PRP: Verified
PRP without proof (not generated)