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
2153429Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
994884199929.9old
4744434772811238.82008-07-14 20:20:52
ECM
DigitsB1Curves
2550000280 / 280
30250000163 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-08Oliver Kruse586CFD5C3EE333152013
Verified2017-11-18ATH586CFD5C3EE333152192282213
History
DateUserTypeResult
2017-11-18ATHC-PRP
M2153429/994884199/474443477281 : 586CFD5C3EE33315
PRP: Verified
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2153429/994884199/474443477281 : 586CFD5C3EE33315
PRP: Verified
PRP without proof (not generated)
2016-03-25alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-14George WoltmanF-ECM
Factor: 474443477281