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
11629741Factored
FactorDigitsBitsDate
959221037691136.5old
688712992292394583028472375.92021-08-05 08:42:29
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-09-24mrh63B37D99F2AC98A0230691553
History
DateUserTypeResult
2021-09-26John AireyCERT
PRP Certification
Proof certified good
2021-09-24mrhC-PRP
M11629741/95922103769/68871299229239458302847 : 63B37D99F2AC98A0
PRP proof power = 8
PRP: Verified
Proof certified good
2021-08-06ATHNF-PP1
Start=6/5, B1=125000, B2=12500000
2021-08-05ATHF-PP1
Start=2/7, B1=125000, Factor: 68871299229239458302847