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
8318917
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
20464535831030.9old
165926456428571443.92008-09-30 23:52:35
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-08Chang Chia-Tche6108159EC78738212787459053
Verified
PRP without proof (not generated)
2020-04-19daveward20056108159EC78738212639984853
History
DateUserTypeResult
2024-06-10Stef42NF-PM1B1=1375000, B2=2725257990
2020-04-19daveward2005C-PRPM8318917/2046453583/16592645642857 : 6108159EC7873821
2018-10-08Chang Chia-TcheC-PRPM8318917/2046453583/16592645642857 : 6108159EC7873821
2008-09-30markrFFactor: 16592645642857