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
2499667
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
44994007825.4old
ECM
DigitsB1Curves
2550000161 / 280
Estimated T-Level: 22.9
TF below 2^71 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 Kruse5C4484E710EDD0711124264153
Verified
PRP without proof (not generated)
2017-11-30storm55105C4484E710EDD071139984253
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-30storm5510C-PRP
M2499667/44994007 : 5C4484E710EDD071
2017-10-14Oliver KruseC-PRP
M2499667/44994007 : 5C4484E710EDD071