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:





MnDetails
6823
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
116101039661918796276953932683.3old
50138453051368463571886153675459668680073470825777790590357188.42021-06-10 14:50:30
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000002844 / 16550
Estimated T-Level: 45.9 ⓘ
TF below 2^147 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver Kruse7C0067E5F17A7E9D1013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbk7C0067E5F17A7E9D1365113
Factored
No proof (small exponent)
2020-04-17Oliver Kruse3F685F0B628BB44B17953
Verified
No proof (small exponent)
2021-06-10mikr3F685F0B628BB44B2465753
Verified
No proof (small exponent)
2021-06-10riccardo uberti3F685F0B628BB44B2512353
History
DateUserTypeResult
2025-03-23masserNF-PP1Start=101/53, B1=1000000000, B2=999000000000
2025-03-14masserNF-PP1Start=6/5, B1=1000000000, B2=999000000000
2025-03-06masserNF-PP1Start=2/7, B1=1000000000, B2=999000000000
2023-08-14-anonymous-NF-PM1B1=36000000000, B2=144596153139137700
2021-12-16ANONYMOUSNF-PM1B1=100000000
2021-06-10riccardo ubertiC-PRPM6823/11610103966191879627695393/501384530513684635718861536754596686800734708257777905903 : 3F685F0B628BB44B
2021-06-10mikrC-PRPM6823/11610103966191879627695393/501384530513684635718861536754596686800734708257777905903 : 3F685F0B628BB44B
2021-06-10Ryan PropperF-ECMFactor: 501384530513684635718861536754596686800734708257777905903
2020-04-17Oliver KruseC-PRPM6823/11610103966191879627695393 : 3F685F0B628BB44B
2017-10-12kkmrkkblmbrbkC-PRPM6823/11610103966191879627695393 : 7C0067E5F17A7E9D
2017-09-21Oliver KruseC-PRPM6823/11610103966191879627695393 : 7C0067E5F17A7E9D
2017-09-21Oliver KruseC-PRPM6823/11610103966191879627695393 : 7C0067E5F17A7E9D