Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
2363857Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
780172339158887931756.1old
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
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-12Oliver Kruse4D009480473E356E147299253
Verified2017-11-24storm55104D009480473E356E1155561253
History
DateUserTypeResult
2018-04-27alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-24storm5510C-PRP
M2363857/78017233915888793 : 4D009480473E356E
PRP: Verified
PRP without proof (not generated)
2017-10-12Oliver KruseC-PRP
M2363857/78017233915888793 : 4D009480473E356E
PRP: Verified
PRP without proof (not generated)