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
4323743Factored
FactorDigitsBitsDate
631266479929.2old
561253430288635811532065.62019-01-08 11:32:46
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbkAB3C9C142E6E1E881013
Verified (Factored)2018-01-31Oliver KruseAB3C9C142E6E1E881276646113
Verified2019-01-10Oliver Kruse8F61FC1F99451B872152540753
Verified2019-01-11kkmrkkblmbrbk8F61FC1F99451B872132214353
History
DateUserTypeResult
2023-04-06USAFSSNF-PM1
B1=224000, B2=114813270
2019-01-11kkmrkkblmbrbkC-PRP
M4323743/631266479/56125343028863581153 : 8F61FC1F99451B87
PRP: Verified
PRP without proof (not generated)
2019-01-10Oliver KruseC-PRP
M4323743/631266479/56125343028863581153 : 8F61FC1F99451B87
PRP: Verified
PRP without proof (not generated)
2019-01-08MarkSF-ECM
Factor: 56125343028863581153 / (ECM curve 2, B1=50000, B2=5000000)
2018-01-31Oliver KruseC-PRP
M4323743/631266479 : AB3C9C142E6E1E88
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4323743/631266479 : AB3C9C142E6E1E88
PRP: Verified
PRP without proof (not generated)