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
3823Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
8968759723.1old
87566961911033.0old
581242463043737386722831389114528778197361380483349162.02019-11-20 14:39:49
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000015149 / 40830
Estimated T-Level: 51.9
TF below 2^167 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse5413DCC9082093022013
Verified (Factored)2017-10-12kkmrkkblmbrbk5413DCC908209302246213
Verified2019-11-20mnd9B5CBE6FB5349F93D3308353
Verified2019-11-21mnd9B5CBE6FB5349F93D3182953
Verified2019-11-21marssystemsB5CBE6FB5349F93D3143653
Verified2020-04-17Oliver KruseB5CBE6FB5349F93D3190353
History
DateUserTypeResult
2024-07-06masserNF-PM1
B1=77000000000, B2=107394883037442000
2021-09-09Jinyuan WangNF-PM1
B1=1300000000, B2=13000000000, E=12
2020-04-17Oliver KruseC-PRP
M3823/8968759/8756696191/5812424630437373867228313891145287781973613804833 : B5CBE6FB5349F93D
PRP: Verified
PRP without proof (small exponent)
2019-11-21marssystemsC-PRP
M3823/8968759/8756696191/5812424630437373867228313891145287781973613804833 : B5CBE6FB5349F93D
PRP: Verified
PRP without proof (small exponent)
2019-11-21mnd9C-PRP
M3823/8968759/8756696191/5812424630437373867228313891145287781973613804833 : B5CBE6FB5349F93D
PRP: Verified
PRP without proof (small exponent)
2019-11-20mnd9C-PRP
M3823/8968759/8756696191/5812424630437373867228313891145287781973613804833 : B5CBE6FB5349F93D
PRP: Verified
PRP without proof (small exponent)
2019-11-20Ryan PropperF-ECM
Factor: 5812424630437373867228313891145287781973613804833 / (ECM curve 1, B1=110000000)
2017-10-12kkmrkkblmbrbkC-PRP
M3823/8968759/8756696191 : 5413DCC908209302
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M3823/8968759/8756696191 : 5413DCC908209302
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M3823/8968759/8756696191 : 5413DCC908209302
PRP without proof (not generated)