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
18851141Factored
FactorDigitsBitsDate
22227025874442466920412270.92020-10-19 01:08:05
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)2003-06-17Martin Koster992786917EFCB84410551830
Verified (Factored)2007-05-28Phil Nelson992786917EFCB84418376604
P-1 factors
DateFactorB1B2
2020-10-1922227025874442466920413380009647000
History
DateUserTypeResult
2020-10-19James HeinrichF-PM1
Factor: 2222702587444246692041 / (P-1, B1=338000, B2=9647000, E=12)
2020-01-19lycornNF
no factor from 2^69 to 2^70
2017-10-27ramgeisNF
no factor from 2^68 to 2^69
2017-10-20YxinityNF
no factor from 2^67 to 2^68
2014-08-02NesowaNF
no factor from 2^66 to 2^67