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
2190901Factored
FactorDigitsBitsDate
9558478379577528116092169.72009-12-11 22:30:47
ECM
DigitsB1Curves
255000093 / 280
Estimated T-Level: 21.7 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Markus WernerA05B4170265EBF9E0
Verified (Factored)1999-05-09Farkas TamasA05B4170265EBF9E1323722
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-09Oliver Kruse16CA2393A1546C6B1013
Verified2017-11-19kkmrkkblmbrbk16CA2393A1546C6B1213096413
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-11-19kkmrkkblmbrbkC-PRP
M2190901/955847837957752811609 : 16CA2393A1546C6B
PRP: Verified
PRP without proof (not generated)
2017-10-09Oliver KruseC-PRP
M2190901/955847837957752811609 : 16CA2393A1546C6B
PRP: Verified
PRP without proof (not generated)
2016-04-02alpertronNF-PM1
B1=500000, B2=15000000, E=12
2009-12-11SubPrimeF-ECM
Factor: 955847837957752811609
2009-01-08Sturle SundeNF
no factor from 2^61 to 2^62
2009-01-02Sturle SundeNF
no factor from 2^60 to 2^61