Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
6947Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
180623617.5old
333457618.3old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001282 / 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 Kruse2FAC68FFAEF6CCA82013
Verified2017-10-12kkmrkkblmbrbk2FAC68FFAEF6CCA82518413
Verified2020-04-17Oliver KruseE40E903341061A7B2291753
Verified2024-02-03Wentao HuangE40E903341061A7B2106853
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6947/180623/333457 : E40E903341061A7B
PRP: Verified
PRP without proof (small exponent)
2023-08-19-Anonymous-NF-PM1
B1=35000000000, B2=149103333456127050
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M6947/180623/333457 : E40E903341061A7B
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6947/180623/333457 : 2FAC68FFAEF6CCA8
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6947/180623/333457 : 2FAC68FFAEF6CCA8
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6947/180623/333457 : 2FAC68FFAEF6CCA8
PRP without proof (not generated)