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
1901329Factored
FactorDigitsBitsDate
74597280879236106794872272.72020-04-16 18:14:38
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.
LL
StatusDateUserResidueShift
Verified (Factored)Thomas Honold9A3361C57CAA0DAC0
Verified (Factored)1998-12-27Louis Towles9A3361C57CAA0DAC1829876
Verified (Factored)2015-07-14MadPoo9A3361C57CAA0DAC1454108
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-04-16mrh314BD98E893307981113952653
Verified2020-04-18Oliver Kruse314BD98E893307981167356853
History
DateUserTypeResult
2020-04-18Oliver KruseC-PRP
M1901329/7459728087923610679487 : 314BD98E89330798
PRP: Verified
PRP without proof (not generated)
2020-04-16mrhC-PRP
M1901329/7459728087923610679487 : 314BD98E89330798
PRP: Verified
PRP without proof (not generated)
2020-04-16MarkSF-ECM
Factor: 7459728087923610679487 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7396575349960473)
2019-04-25chuenkitNF
no factor from 2^67 to 2^68
2017-11-22mikrNF-PM1
B1=8000000, B2=320000000, E=12
2017-03-02Smok_bmv NF
no factor from 2^66 to 2^67
2015-08-30ramgeisNF
no factor from 2^65 to 2^66
2015-07-14MadPooC-LL
9A3361C57CAA0DAC
2015-05-20monstNF
no factor from 2^64 to 2^65
2015-05-20monstNF
no factor from 2^63 to 2^64
2011-06-12kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2011-02-11Carsten KossendeyNF-PM1
B1=105000, B2=1785000, E=6
2011-01-11GrunwalderGIMPNF
no factor from 2^62 to 2^63
2011-01-11GrunwalderGIMPNF
no factor from 2^61 to 2^62
2009-05-24Architects CubedNF
no factor from 2^60 to 2^61