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
2477983
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
1940989612479291547.5old
ECM
DigitsB1Curves
2550000222 / 280
Estimated T-Level: 24.0
TF below 2^75 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 Kruse54DE95044EB884841154327653
Verified
PRP without proof (not generated)
2017-11-29storm551054DE95044EB884841137503153
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-29storm5510C-PRPM2477983/194098961247929 : 54DE95044EB88484
2017-10-14Oliver KruseC-PRPM2477983/194098961247929 : 54DE95044EB88484