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
6977Composite, with 7 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
41863515.4old
209311617.7old
389414279928.5old
8806994957831239.7old
320782397496971444.9old
4293651753233393511858.6old
163884829100754381413592373.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001996 / 9201
Estimated T-Level: 41.1 ⓘ
TF below 2^131 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse3BD5E07352C6983E7013
Verified2017-10-02kkmrkkblmbrbk3BD5E07352C6983E7013
Verified2017-12-07ATH3BD5E07352C6983E7268813
Verified2020-04-17Oliver Kruse3CF167E453EA582A7600753
Verified2024-02-03Wentao Huang3CF167E453EA582A7145853
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6977/41863/209311/389414279/880699495783/32078239749697/429365175323339351/16388482910075438141359 : 3CF167E453EA582A
PRP: Verified
PRP without proof (small exponent)
2023-08-20-Anonymous-NF-PM1
B1=35000000000, B2=143589103727719650
2021-08-27Seth_TrNF-PM1
B1=400000000
2021-08-27Seth_TrNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M6977/41863/209311/389414279/880699495783/32078239749697/429365175323339351/16388482910075438141359 : 3CF167E453EA582A
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6977/41863/209311/389414279/880699495783/32078239749697/429365175323339351/16388482910075438141359 : 3BD5E07352C6983E
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6977/41863/209311/389414279/880699495783/32078239749697/429365175323339351/16388482910075438141359 : 3BD5E07352C6983E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6977/known_factors : 3BD5E07352C6983E
PRP without proof (not generated)