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:










MnStatusDetails
3163423Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
65431988258171342.6old
2413260126504403211857.72015-07-14 12:16:07
ECM
DigitsB1Curves
255000099 / 280
Estimated T-Level: 21.8 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-31Oliver Kruse518D365C77118A3A283243653
Verified2017-12-12kkmrkkblmbrbk518D365C77118A3A212021353
History
DateUserTypeResult
2022-08-17JossNF-PM1
B1=3163423, B2=334210800
2022-03-26LordJuliusNF
no factor from 2^66 to 2^67
2022-03-26LordJuliusNF
no factor from 2^65 to 2^66
2022-03-26LordJuliusNF
no factor from 2^64 to 2^65
2022-03-26LordJuliusNF
no factor from 2^63 to 2^64
2022-03-26LordJuliusNF
no factor from 2^62 to 2^63
2021-12-24JossNF-PM1
B1=3163423, B2=172025700
2021-09-27JossNF
no factor from 2^67 to 2^68
2021-09-27JossNF-PM1
B1=3163423, B2=63268460, E=12
2021-01-16JossNF
no factor from 2^64 to 2^65
2021-01-09JossNF
no factor from 2^63 to 2^64
2021-01-06JossNF
no factor from 2^62 to 2^63
2021-01-06JossNF-PM1
B1=316342, B2=3163423, E=6
2021-01-05JossNF
no factor from 2^61 to 2^62
2021-01-05JossNF-PM1
B1=316342
2021-01-04JossNF
no factor from 2^60 to 2^61
2017-12-12kkmrkkblmbrbkC-PRP
M3163423/6543198825817/241326012650440321 : 518D365C77118A3A
PRP: Verified
PRP without proof (not generated)
2017-10-31Oliver KruseC-PRP
M3163423/6543198825817/241326012650440321 : 518D365C77118A3A
PRP: Verified
PRP without proof (not generated)
2015-07-14TJAOIF
Factor: 241326012650440321 / TF: 57-58