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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1636549Factored
FactorDigitsBitsDate
2084014227591237.6old
18592505879211340.82008-07-15 07:44:39
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-02Oliver Kruse1A1D5C28F4327E612013
Verified2017-11-02kkmrkkblmbrbk1A1D5C28F4327E612149589113
History
DateUserTypeResult
2017-11-02kkmrkkblmbrbkC-PRP
M1636549/208401422759/1859250587921 : 1A1D5C28F4327E61
PRP: Verified
PRP without proof (not generated)
2017-10-02Oliver KruseC-PRP
M1636549/208401422759/1859250587921 : 1A1D5C28F4327E61
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 1859250587921