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
2487827
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
318441857928.2old
ECM
DigitsB1Curves
2550000211 / 280
Estimated T-Level: 23.8
TF below 2^74 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-14Oliver Kruse9E2B8CF6CE49C33B1122671653
Verified
PRP without proof (not generated)
2017-11-29storm55109E2B8CF6CE49C33B1150902853
History
DateUserTypeResult
2022-08-19USAFSSNF-PM1B1=224000, B2=203668920
2017-11-29storm5510C-PRPM2487827/318441857 : 9E2B8CF6CE49C33B
2017-10-14Oliver KruseC-PRPM2487827/318441857 : 9E2B8CF6CE49C33B