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
8333257
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
267330884571134.6old
1441116529085008071857.02015-05-15 11:53:40
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-13trebor4E98E7B2B7AD3A1F2708671353
Verified
PRP without proof (not generated)
2020-04-22Igvan284E98E7B2B7AD3A1F2766588553
History
DateUserTypeResult
2024-05-10Stef42NF-PM1B1=1025000, B2=1519818300
2020-04-22Igvan28C-PRPM8333257/26733088457/144111652908500807 : 4E98E7B2B7AD3A1F
2018-10-13treborC-PRPM8333257/26733088457/144111652908500807 : 4E98E7B2B7AD3A1F
2015-05-15TJAOIFFactor: 144111652908500807