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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3576847Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4242742935024199608072168.52009-08-08 03:09:35
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert FribergC2958294F3D94D1E0
Verified (Factored)1999-08-07Stephen WoodC2958294F3D94D1E3476163
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-09kkmrkkblmbrbkECE734898DFB51BA18573853
Verified2017-11-25Oliver KruseECE734898DFB51BA185926453
History
DateUserTypeResult
2022-05-25JossNF-PM1
B1=100000, B2=130364850
2022-03-01JossNF-PM1
B1=100000
2017-11-25Oliver KruseC-PRP
M3576847/424274293502419960807 : ECE734898DFB51BA
PRP: Verified
PRP without proof (not generated)
2017-11-09kkmrkkblmbrbkC-PRP
M3576847/424274293502419960807 : ECE734898DFB51BA
PRP: Verified
PRP without proof (not generated)
2009-08-08MattF-ECM
Factor: 424274293502419960807
2009-07-09Carsten KossendeyNF-PM1
B1=20000, B2=245000
2009-03-14S485122NF
no factor from 2^60 to 2^61