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
3600559Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
32549053371031.6old
13731955936571340.32008-09-30 21:29:43
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-10kkmrkkblmbrbkF421ECADF8C65EFD2294534453
Verified2017-11-26Oliver KruseF421ECADF8C65EFD2105173253
History
DateUserTypeResult
2022-05-23JossNF-PM1
B1=100000, B2=130364850
2022-02-28JossNF-PM1
B1=90000
2017-11-26Oliver KruseC-PRP
M3600559/3254905337/1373195593657 : F421ECADF8C65EFD
PRP: Verified
PRP without proof (not generated)
2017-11-10kkmrkkblmbrbkC-PRP
M3600559/3254905337/1373195593657 : F421ECADF8C65EFD
PRP: Verified
PRP without proof (not generated)
2008-09-30markrF
Factor: 1373195593657