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
8040583Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
38469662478715213611961.7old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-19_p95holder_5F9F497E50E4A2951704559853
Verified2020-01-08marssystems5F9F497E50E4A2951439198053
History
DateUserTypeResult
2024-02-25Stef42NF-PM1
B1=944000, B2=1792472220
2020-01-08marssystemsC-PRP
M8040583/3846966247871521361 : 5F9F497E50E4A295
PRP: Verified
PRP without proof (not generated)
2018-07-19_p95holder_C-PRP
M8040583/3846966247871521361 : 5F9F497E50E4A295
PRP: Verified
PRP without proof (not generated)