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
21017Factored
FactorDigitsBitsDate
6674287535597250974030416872789.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001289 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse8BC5A0B600036B471013
Verified2017-10-12kkmrkkblmbrbk8BC5A0B600036B471844313
Unverified2020-04-17Oliver KruseD6D02190257876__11793553
History
DateUserTypeResult
2023-09-08nordiNF-PM1
B1=12000000000, B2=3621091499775750
2023-04-06nordiNF-PM1
B1=12000000000
2022-06-16LordJuliusNF
no factor from 2^59 to 2^60
2022-06-16LordJuliusNF
no factor from 2^58 to 2^59
2022-06-16LordJuliusNF
no factor from 2^57 to 2^58
2022-06-15LordJuliusNF
no factor from 2^59 to 2^60
2020-04-17Oliver KruseC-PRP
M21017/667428753559725097403041687 : D6D02190257876__
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M21017/667428753559725097403041687 : 8BC5A0B600036B47
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M21017/667428753559725097403041687 : 8BC5A0B600036B47
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M21017/667428753559725097403041687 : 8BC5A0B600036B47
PRP without proof (not generated)
2016-11-18kkmrkkblmbrbkNF-PM1
B1=500000000, B2=10000000000, E=12