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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MnDetails
8331571
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
149968279927.2old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-12One ManC997A41E371D7A701192212153
Verified
PRP without proof (not generated)
2020-04-22Igvan28C997A41E371D7A701750407953
History
DateUserTypeResult
2024-05-10Stef42NF-PM1B1=1025000, B2=1519818300
2020-04-22Igvan28C-PRPM8331571/149968279 : C997A41E371D7A70
2018-10-12One ManC-PRPM8331571/149968279 : C997A41E371D7A70