Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3588209Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2968602847421803797612168.02016-05-27 03:50:52
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Edo de Roo Jankovic50C2CC58A92EF7C80
Verified (Factored)1999-07-27Charles Scovil50C2CC58A92EF7C81053844
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-10Oliver Kruse812345B8E06C15241220886453
Verified2017-12-18kkmrkkblmbrbk812345B8E06C1524167748753
P-1 factors
DateFactorB1B2
2016-05-272968602847421803797612250006581250
History
DateUserTypeResult
2022-05-25JossNF-PM1
B1=100000, B2=130364850
2022-03-22JossNF-PM1
B1=100000
2022-03-05JossNF-PM1
B1=90000
2017-12-18kkmrkkblmbrbkC-PRP
M3588209/296860284742180379761 : 812345B8E06C1524
PRP: Verified
PRP without proof (not generated)
2017-11-10Oliver KruseC-PRP
M3588209/296860284742180379761 : 812345B8E06C1524
PRP: Verified
PRP without proof (not generated)
2016-05-27Squeeky_SquirrelF-PM1
Factor: 296860284742180379761 / (P-1, B1=225000, B2=6581250, E=12)
2016-02-25ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2012-07-02GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-12-29Squeeky_SquirrelNF-PM1
B1=85000, B2=1593750, E=6
2011-06-15Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-10Carsten KossendeyNF-PM1
B1=20000, B2=245000
2009-03-14S485122NF
no factor from 2^60 to 2^61