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
5475433Factored
FactorDigitsBitsDate
2551081948321734356572167.82017-03-16 12:00:23
ECM
DigitsB1Curves
25500006 / 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)1998-09-13Wayne Yeung4E5414909F4C32A10
Verified (Factored)2000-12-07Britton Devon Smith4E5414909F4C32A1131788
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-12-03kkmrkkblmbrbkFEE39860FE0D489E1279151553
Verified2018-06-29axnFEE39860FE0D489E188938953
History
DateUserTypeResult
2018-06-29axnC-PRP
M5475433/255108194832173435657 : FEE39860FE0D489E
PRP: Verified
PRP without proof (not generated)
2017-12-03kkmrkkblmbrbkC-PRP
M5475433/255108194832173435657 : FEE39860FE0D489E
PRP: Verified
PRP without proof (not generated)
2017-03-16Alex_soldierF
Factor: 255108194832173435657 / TF: 67-68*
2016-07-04Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-24snme2pm1NF
no factor from 2^65 to 2^66
2014-12-30monstNF
no factor from 2^64 to 2^65
2014-12-30snme2pm1NF
no factor from 2^63 to 2^64
2010-04-25Squeeky_SquirrelNF-PM1
B1=60000, B2=1035000, E=6
2009-05-05GrunwalderGIMPNF
no factor from 2^62 to 2^63