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
1882247Factored
FactorDigitsBitsDate
17838133930746214113627292580.62009-12-23 05:22:53
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Bill Ingles5EF7AA0665E5E25F0
Verified (Factored)1999-01-02Ethan O'Connor5EF7AA0665E5E25F695543
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-04Oliver KruseA4CC58C6BFC9E4F21013
Verified2017-11-08kkmrkkblmbrbkA4CC58C6BFC9E4F21150414813
History
DateUserTypeResult
2017-11-08kkmrkkblmbrbkC-PRP
M1882247/1783813393074621411362729 : A4CC58C6BFC9E4F2
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1882247/1783813393074621411362729 : A4CC58C6BFC9E4F2
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2009-12-23Dmitry B. KhachaturovF-ECM
Factor: 1783813393074621411362729