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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
18912689Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
145254561462080068660632373.62019-05-31 20:47:22
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)2003-04-27Sverre Hvammen Johansen6C03DB11472F99D1373538
Verified (Factored)2007-02-20McChamp6C03DB11472F99D18186200
History
DateUserTypeResult
2019-05-31Sergey NosovF-ECM
Factor: 14525456146208006866063 / (ECM curve 1, B1=50000, B2=5000000)
2017-09-18ramgeisNF
no factor from 2^68 to 2^69
2017-09-18ramgeisNF
no factor from 2^67 to 2^68
2014-07-29NesowaNF
no factor from 2^66 to 2^67