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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2227747Factored
FactorDigitsBitsDate
2705556702359502307730392477.82013-06-24 10:36:02
ECM
DigitsB1Curves
255000018 / 280
Estimated T-Level: 20.3
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Cornelius CaesarA6AF198E89EC2CF50
Verified (Factored)1999-02-14Ethan HansenA6AF198E89EC2CF51320195
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-09Oliver KruseC36F2F32D3A2BDA61013
Verified2017-11-20ATHC36F2F32D3A2BDA61127724813
History
DateUserTypeResult
2017-11-20ATHC-PRP
M2227747/270555670235950230773039 : C36F2F32D3A2BDA6
PRP: Verified
PRP without proof (not generated)
2017-10-09Oliver KruseC-PRP
M2227747/270555670235950230773039 : C36F2F32D3A2BDA6
PRP: Verified
PRP without proof (not generated)
2016-04-08alpertronNF-PM1
B1=500000, B2=15000000, E=12
2013-06-24hiemsF-ECM
Factor: 270555670235950230773039
2012-04-20Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-13Oscar ÖstlinNF-PM1
B1=85000, B2=1615000, E=6
2010-10-23Oscar ÖstlinNF-PM1
B1=75011
2009-01-10Sturle SundeNF
no factor from 2^60 to 2^61