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
4394371Factored
FactorDigitsBitsDate
27488419010576823881738412581.22010-01-10 21:50:28
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-05-08Richard Rankin8565090C97CA669F0
Verified (Factored)1999-12-30Matti Kinnunen8565090C97CA669F2082100
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk46F59394B3B147D31013
Verified2018-02-08Oliver Kruse46F59394B3B147D31149308713
History
DateUserTypeResult
2023-03-14USAFSSNF-PM1
B1=224000, B2=114813270
2018-02-08Oliver KruseC-PRP
M4394371/2748841901057682388173841 : 46F59394B3B147D3
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4394371/2748841901057682388173841 : 46F59394B3B147D3
PRP: Verified
PRP without proof (not generated)
2010-01-10alan145F-ECM
Factor: 2748841901057682388173841
2009-08-02Carsten KossendeyNF-PM1
B1=25000, B2=356250