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
2323403Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
83911465131291342.9old
ECM
DigitsB1Curves
2550000175 / 280
Estimated T-Level: 23.1
TF below 2^72 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-11Oliver KruseF7F137B7CFFA85121013
Verified2017-11-23kkmrkkblmbrbkF7F137B7CFFA85121184455313
History
DateUserTypeResult
2021-04-26ViliamFNF-PM1
B1=5000000, B2=480000000
2018-03-05alpertronNF-PM1
B1=500000, B2=15000000, E=12
2017-11-23kkmrkkblmbrbkC-PRP
M2323403/8391146513129 : F7F137B7CFFA8512
PRP: Verified
PRP without proof (not generated)
2017-10-11Oliver KruseC-PRP
M2323403/8391146513129 : F7F137B7CFFA8512
PRP: Verified
PRP without proof (not generated)