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
1957147Factored
FactorDigitsBitsDate
724144391929.4old
12245477349611340.22008-07-15 07:48:40
48018236468576657999037372582.02024-03-18 10:27:29
411195205303022898164824092685.12021-08-02 23:35:03
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 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
Verified (Factored)2017-10-05Oliver KruseA9F2632AE74EE11A2013
Verified (Factored)2017-11-11Chang Chia-TcheA9F2632AE74EE11A2151361513
Verified (Factored)2021-08-03SRJ28776D6EB12EB16EE1BC314561453
Verified2024-03-18Naegi Makoto6D6EB12EB16EE1BC478573153
History
DateUserTypeResult
2024-03-18Jonathan WebbCERT
PRP Certification
Proof certified good
2024-03-18Naegi MakotoC-PRP
M1957147/724144391/1224547734961/4801823646857665799903737/41119520530302289816482409 : 6D6EB12EB16EE1BC
PRP proof power = 7
PRP: Verified
Proof certified good
2024-03-18TJAOIF-ECM
Factor: 4801823646857665799903737 / (ECM curve 17, B1=250000, B2=40000000, Sigma=4599398639097093)
2021-08-03curtiscCERT
PRP Certification
Proof certified good
2021-08-03SRJ2877C-PRP
M1957147/724144391/1224547734961/41119520530302289816482409 : 6D6EB12EB16EE1BC
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2021-08-02MarkSF-ECM
Factor: 41119520530302289816482409 / (ECM curve 17, B1=50000, B2=5000000, Sigma=8815251676010392)
2017-11-11Chang Chia-TcheC-PRP
M1957147/724144391/1224547734961 : A9F2632AE74EE11A
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1957147/724144391/1224547734961 : A9F2632AE74EE11A
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 1224547734961