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
8331641
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
3849218142011238.5old
6433981848232055211859.22015-10-29 12:47:34
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-13Chang Chia-Tche2AAFEAE4079FA8742814408453
Verified
PRP without proof (not generated)
2020-04-23marssystems2AAFEAE4079FA8742512434353
History
DateUserTypeResult
2024-05-10Stef42NF-PM1B1=1025000, B2=1519818300
2020-04-23marssystemsC-PRPM8331641/384921814201/643398184823205521 : 2AAFEAE4079FA874
2018-10-13Chang Chia-TcheC-PRPM8331641/384921814201/643398184823205521 : 2AAFEAE4079FA874
2015-10-29TJAOIFFactor: 643398184823205521