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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MnStatusDetails
2519659Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
178110629996101211754.0old
ECM
DigitsB1Curves
2550000140 / 280
Estimated T-Level: 22.5
TF below 2^70 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-14Oliver Kruse05C54D96A2F7A3761200861753
Verified2017-11-30kkmrkkblmbrbk05C54D96A2F7A3761243587853
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-30kkmrkkblmbrbkC-PRP
M2519659/17811062999610121 : 05C54D96A2F7A376
PRP: Verified
PRP without proof (not generated)
2017-10-14Oliver KruseC-PRP
M2519659/17811062999610121 : 05C54D96A2F7A376
PRP: Verified
PRP without proof (not generated)