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
1909487Factored
FactorDigitsBitsDate
244414337927.9old
18568615382811340.82008-07-15 07:48:07
63357957959171211652.52014-08-11 10:43:37
74906809895153491915192272.72021-02-25 00:02:56
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
Verified (Factored)2017-10-05Oliver Kruse43BBD210113DC9403013
Verified (Factored)2017-11-15kkmrkkblmbrbk43BBD210113DC9403140096813
Verified2021-02-26LaurV69A4A8979E29DB7C4153648253
History
DateUserTypeResult
2021-07-03Dylan DelgadoNF-PM1
B1=2000000, B2=262000000
2021-02-26Ben DeloCERT
PRP Certification
Proof certified good
2021-02-26LaurVC-PRP
M1909487/244414337/1856861538281/6335795795917121/7490680989515349191519 : 69A4A8979E29DB7C
PRP proof power = 7
PRP: Verified
Proof certified good
2021-02-25_p95holder_F-ECM
Factor: 7490680989515349191519 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-15kkmrkkblmbrbkC-PRP
M1909487/244414337/1856861538281/6335795795917121 : 43BBD210113DC940
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1909487/244414337/1856861538281/6335795795917121 : 43BBD210113DC940
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1909487/244414337/1856861538281/6335795795917121 : 43BBD210113DC940
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-08-11TJAOIF
Factor: 6335795795917121
2008-07-15J FeitsmaF
Factor: 1856861538281