Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnDetails
2349869
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
268911925431857591754.6old
ECM
DigitsB1Curves
2550000177 / 280
Estimated T-Level: 23.2
TF below 2^72 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-12Oliver Kruse6352AABBE4CBF22D1013
Verified
PRP without proof (not generated)
2017-11-24storm55106352AABBE4CBF22D1129536613
History
DateUserTypeResult
2018-03-18alpertronNF-PM1B1=500000, B2=15000000, E=12
2017-11-24storm5510C-PRPM2349869/26891192543185759 : 6352AABBE4CBF22D
2017-10-12Oliver KruseC-PRPM2349869/26891192543185759 : 6352AABBE4CBF22D