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
1701523Factored
FactorDigitsBitsDate
68060921826.0old
231407129927.82008-07-15 07:45:31
24774174891031.22008-07-15 07:45:32
20763433494081102557745592580.82019-05-04 22:42:44
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000173 / 1566
Estimated T-Level: 30.6
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30alpertron7C1280D398DB4E433013
Verified (Factored)2017-10-18Oliver Kruse7C1280D398DB4E43356168013
Verified2019-05-04ATH4D8FFB7217FCCA074126246753
Verified2019-05-05kkmrkkblmbrbk4D8FFB7217FCCA07458239953
History
DateUserTypeResult
2019-05-05kkmrkkblmbrbkC-PRP
M1701523/68060921/231407129/2477417489/2076343349408110255774559 : 4D8FFB7217FCCA07
PRP: Verified
PRP without proof (not generated)
2019-05-04ATHC-PRP
M1701523/68060921/231407129/2477417489/2076343349408110255774559 : 4D8FFB7217FCCA07
PRP: Verified
PRP without proof (not generated)
2019-05-04Chang Chia-TcheF-ECM
Factor: 2076343349408110255774559 / (ECM curve 2, B1=50000, B2=5000000)
2017-10-18Oliver KruseC-PRP
M1701523/68060921/231407129/2477417489 : 7C1280D398DB4E43
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1701523/231407129/2477417489/68060921 : 7C1280D398DB4E43
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 2477417489
2008-07-15J FeitsmaF
Factor: 231407129