Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
1692181Factored
FactorDigitsBitsDate
2863587338810817621198712477.92014-09-01 19:50:10
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)Alain GadouryF4FF4A5F57378D330
Verified (Factored)1998-12-13Gerhard H WrodniggF4FF4A5F57378D3342501
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-03Oliver KruseDEC199753662E38A1013
Verified2017-11-03kkmrkkblmbrbkDEC199753662E38A1125258813
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2022-03-08LordJuliusNF
no factor from 2^58 to 2^60
2017-11-03kkmrkkblmbrbkC-PRP
M1692181/286358733881081762119871 : DEC199753662E38A
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1692181/286358733881081762119871 : DEC199753662E38A
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-09-01Chang Chia-TcheF-ECM
Factor: 286358733881081762119871 / (ECM curve 2, B1=50000, B2=5000000)
2014-01-14David CampeauNF-PM1
B1=995000, B2=28855000, E=12
2011-02-08Carsten KossendeyNF-PM1
B1=90000, B2=1485000, E=6
2011-01-26JossNF-PM1
B1=50000
2010-09-26GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-24Architects CubedNF
no factor from 2^60 to 2^61