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
2599117
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
2130860081291237.6old
ECM
DigitsB1Curves
2550000128 / 280
Estimated T-Level: 22.3
TF below 2^69 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-15Oliver Kruse2A2B9EBF74C23A17123129353
Verified
PRP without proof (not generated)
2017-12-02storm55102A2B9EBF74C23A17115803453
History
DateUserTypeResult
2022-10-03USAFSSNF-PM1B1=300000, B2=313610220
2017-12-02storm5510C-PRPM2599117/213086008129 : 2A2B9EBF74C23A17
2017-10-15Oliver KruseC-PRPM2599117/213086008129 : 2A2B9EBF74C23A17