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

PrimeNet Exponent Status

Exponent Range:





MnDetails
10404019
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
104040191926.6old
80502055466420226777612272.82020-06-09 12:13:55
P-1 factors
DateFactorsB1B2
2020-06-098050205546642022677761
5000000
ECM
DigitsB1Curves
255000032 / 280
Estimated T-Level: 20.6
TF below 2^63 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
PRP without proof (not generated)
2020-06-07riccardo uberti4EBB6B277061B9D71797955653
Verified
PRP without proof (not generated)
2020-06-11Oliver Kruse4EBB6B277061B9D72525313253
History
DateUserTypeResult
2024-12-10James HeinrichNF-PM1B1=825000, B2=1699192572
2021-06-02riccardo ubertiNF-PP1Start=2/7, B1=750000, B2=20000000
2021-05-20riccardo ubertiNF-PP1Start=6/5, B1=750000, B2=20000000
2020-06-11Oliver KruseC-PRPM10404019/104040191/8050205546642022677761 : 4EBB6B277061B9D7
2020-06-09riccardo ubertiF-PM1Factor: 8050205546642022677761 / B1=500000
2020-06-07riccardo ubertiC-PRPM10404019/104040191 : 4EBB6B277061B9D7