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
2487739
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
15374227031030.5old
ECM
DigitsB1Curves
2550000194 / 280
Estimated T-Level: 23.5
TF below 2^73 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 KruseE6C73CAB74FB59A9153893453
Verified
PRP without proof (not generated)
2017-11-29storm5510E6C73CAB74FB59A9182255653
History
DateUserTypeResult
2022-08-19USAFSSNF-PM1B1=224000, B2=203668920
2017-11-29storm5510C-PRPM2487739/1537422703 : E6C73CAB74FB59A9
2017-10-14Oliver KruseC-PRPM2487739/1537422703 : E6C73CAB74FB59A9