Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
2089897Factored
FactorDigitsBitsDate
5887448838711239.1old
130210572807671443.62008-09-30 14:36:27
29402462052107491371961.42016-01-17 12:32:58
28531790351105196293772271.32022-01-25 09:52:40
ECM
DigitsB1Curves
2550000106 / 280
Estimated T-Level: 21.9
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30alpertron234413471A1150C73013
Verified (Factored)2017-10-21Oliver Kruse234413471A1150C7340804013
Verified2022-01-28SRJ287717B698205E74C8F9449156153
P-1 factors
DateFactorB1B2
2016-01-17294024620521074913750000015000000
History
DateUserTypeResult
2022-01-28curtiscCERT
PRP Certification
Proof certified good
2022-01-28SRJ2877C-PRP
M2089897/588744883871/13021057280767/2940246205210749137/2853179035110519629377 : 17B698205E74C8F9
PRP proof power = 7
PRP: Verified
Proof certified good
2022-01-25MarkSF-ECM
Factor: 2853179035110519629377 / (ECM curve 6, B1=50000, B2=5000000, Sigma=7424192921619349)
2017-10-21Oliver KruseC-PRP
M2089897/588744883871/13021057280767/2940246205210749137 : 234413471A1150C7
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2089897/13021057280767/2940246205210749137/588744883871 : 234413471A1150C7
PRP: Verified (Factored)
PRP without proof (not generated)
2016-01-17alpertronF-PM1
Factor: 2940246205210749137 / (P-1, B1=500000, B2=15000000, E=12)
2008-09-30markrF
Factor: 13021057280767