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
1508401Factored
FactorDigitsBitsDate
289612993928.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 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
Verified2017-10-01Oliver Kruse4306B66E60F3DAD71013
Verified2017-10-29kkmrkkblmbrbk4306B66E60F3DAD71117223513
History
DateUserTypeResult
2017-10-29kkmrkkblmbrbkC-PRP
M1508401/289612993 : 4306B66E60F3DAD7
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M1508401/289612993 : 4306B66E60F3DAD7
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12