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
6949Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
6879511722.7old
355452389114631245967027990836415134111.5old
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 KruseC872EB0A81F418862013
Verified2017-10-02kkmrkkblmbrbkC872EB0A81F418862013
Verified2017-12-07ATHC872EB0A81F418862138413
Verified2020-04-17Oliver Kruse32DE7E678056E67F252153
Verified2024-02-03Wentao Huang32DE7E678056E67F27153
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6949/6879511/3554523891146312459670279908364151 : 32DE7E678056E67F
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
M6949/6879511/3554523891146312459670279908364151 : 32DE7E678056E67F
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6949/6879511/3554523891146312459670279908364151 : C872EB0A81F41886
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6949/6879511/3554523891146312459670279908364151 : C872EB0A81F41886
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6949/known_factors : C872EB0A81F41886
PRP without proof (not generated)