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
3171787Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
202994369927.6old
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-31Oliver Kruse8D32D95D12B0DD7A1205291853
Verified2017-12-12kkmrkkblmbrbk8D32D95D12B0DD7A1230352953
History
DateUserTypeResult
2022-09-12JossNF-PM1
B1=1000000, B2=241175550
2022-04-01LordJuliusNF
no factor from 2^66 to 2^67
2022-04-01LordJuliusNF
no factor from 2^65 to 2^66
2022-02-27JossNF-PM1
B1=1000000, B2=134343300
2021-04-08JossNF
no factor from 2^67 to 2^68
2021-01-09JossNF
no factor from 2^64 to 2^65
2021-01-06JossNF
no factor from 2^63 to 2^64
2021-01-05JossNF
no factor from 2^62 to 2^63
2021-01-04JossNF
no factor from 2^61 to 2^62
2021-01-04JossNF
no factor from 2^60 to 2^61
2021-01-04JossNF-PM1
B1=317178, B2=3171787, E=6
2017-12-12kkmrkkblmbrbkC-PRP
M3171787/202994369 : 8D32D95D12B0DD7A
PRP: Verified
PRP without proof (not generated)
2017-10-31Oliver KruseC-PRP
M3171787/202994369 : 8D32D95D12B0DD7A
PRP: Verified
PRP without proof (not generated)