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
1807171Factored
FactorDigitsBitsDate
46353685459238891652.0old
252825450527404871754.52014-11-25 12:48:37
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
Verified2017-10-03Oliver Kruse695A2E082CB8B04D2013
Verified2017-11-05kkmrkkblmbrbk695A2E082CB8B04D260610813
History
DateUserTypeResult
2017-11-05kkmrkkblmbrbkC-PRP
M1807171/4635368545923889/25282545052740487 : 695A2E082CB8B04D
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1807171/4635368545923889/25282545052740487 : 695A2E082CB8B04D
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-11-25TJAOIF
Factor: 25282545052740487 / TF: 54-55