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
2131691Factored
FactorDigitsBitsDate
12073386218171340.1old
145105387015000174200072373.62022-01-02 23:25:34
ECM
DigitsB1Curves
2550000101 / 280
Estimated T-Level: 21.8
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-08Oliver Kruse09D8BAECFD276DAE1013
Verified (Factored)2017-11-18kkmrkkblmbrbk09D8BAECFD276DAE1113709413
Verified2022-01-03MarkSA69F38982DD256EE27408753
History
DateUserTypeResult
2022-01-03devcat9191CERT
PRP Certification
Proof certified good
2022-01-03MarkSC-PRP
M2131691/1207338621817/14510538701500017420007 : A69F38982DD256EE
PRP proof power = 7
PRP: Verified
Proof certified good
2022-01-02MarkSF-ECM
Factor: 14510538701500017420007 / (ECM curve 3, B1=50000, B2=5000000, Sigma=3105293693753013)
2017-11-18kkmrkkblmbrbkC-PRP
M2131691/1207338621817 : 09D8BAECFD276DAE
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2131691/1207338621817 : 09D8BAECFD276DAE
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-20alpertronNF-PM1
B1=500000, B2=15000000, E=12