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
1903441Factored
FactorDigitsBitsDate
26001004071031.3old
29117165389931341.42008-07-15 07:48:02
6086373466003511549.12008-08-26 20:20:15
133918808063615935875772373.52021-04-05 04:37:20
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 Kruse4DA8E96D4F4C246D3013
Verified (Factored)2017-11-15kkmrkkblmbrbk4DA8E96D4F4C246D323457513
Verified2021-04-08Klaus NordmannA2A86740F8567B66414992853
Verified2021-05-13krackerA2A86740F8567B664113883953
History
DateUserTypeResult
2021-06-30Dylan DelgadoNF-PM1
B1=2000000, B2=262000000
2021-05-13krackerC-PRP
M1903441/2600100407/2911716538993/608637346600351/13391880806361593587577 : A2A86740F8567B66
PRP: Verified
PRP without proof (not generated)
2021-04-08Klaus NordmannC-PRP
M1903441/2600100407/2911716538993/608637346600351/13391880806361593587577 : A2A86740F8567B66
PRP proof power = 7
PRP: Verified
PRP proof never uploaded
2021-04-05_p95holder_F-ECM
Factor: 13391880806361593587577 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-15kkmrkkblmbrbkC-PRP
M1903441/2600100407/2911716538993/608637346600351 : 4DA8E96D4F4C246D
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1903441/2600100407/2911716538993/608637346600351 : 4DA8E96D4F4C246D
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1903441/2600100407/2911716538993/608637346600351 : 4DA8E96D4F4C246D
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-08-26-Anonymous-F
Factor: 608637346600351
2008-07-15J FeitsmaF
Factor: 2911716538993