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
6761Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
26340857824.7old
367653510742653244736409706907065734111.5old
54541294690103925735113007878812401371339128.72016-12-24 01:06:08
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002930 / 9201
Estimated T-Level: 41.6
TF below 2^133 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkD3FB36739EB70F6B3013
Verified2017-09-25George WoltmanD3FB36739EB70F6B3104713
Verified2017-10-02kkmrkkblmbrbkD3FB36739EB70F6B3013
Verified2020-04-17Oliver KruseD2C9F5D1B4B4CC263357353
Verified2024-02-03Wentao HuangD2C9F5D1B4B4CC263351553
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6761/26340857/3676535107426532447364097069070657/545412946901039257351130078788124013713 : D2C9F5D1B4B4CC26
PRP: Verified
PRP without proof (small exponent)
2023-08-13-Anonymous-NF-PM1
B1=36000000000, B2=144600212653396500
2021-12-18Oliver KruseNF-PM1
B1=1000000000, B2=1080854750315340
2020-04-17Oliver KruseC-PRP
M6761/26340857/3676535107426532447364097069070657/545412946901039257351130078788124013713 : D2C9F5D1B4B4CC26
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6761/26340857/3676535107426532447364097069070657/545412946901039257351130078788124013713 : D3FB36739EB70F6B
PRP: Verified
PRP without proof (not generated)
2017-09-25George WoltmanC-PRP
M6761/known_factors : D3FB36739EB70F6B
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M6761/26340857/3676535107426532447364097069070657/545412946901039257351130078788124013713 : D3FB36739EB70F6B
PRP: Verified
PRP without proof (not generated)
2016-12-24kkmrkkblmbrbkF-ECM
Factor: 545412946901039257351130078788124013713 / (ECM curve 1586, B1=3000000, B2=300000000)