Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
6373Composite, with 6 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
38239515.2old
140207617.1old
207849023927.6old
590432959929.1old
2405065563326643611857.7old
22817811709538540760285192580.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001365 / 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 Kruse53781F72BC9AAABB6013
Verified2017-10-02kkmrkkblmbrbk53781F72BC9AAABB6013
Verified2017-12-07ATH53781F72BC9AAABB6265213
Verified2020-04-17Oliver Kruse9836C53712C4DDEB6192353
Verified2024-02-03Wentao Huang9836C53712C4DDEB6270353
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6373/38239/140207/207849023/590432959/240506556332664361/2281781170953854076028519 : 9836C53712C4DDEB
PRP: Verified
PRP without proof (small exponent)
2023-08-05-Anonymous-NF-PM1
B1=38000000000, B2=159110268557139900
2021-05-21nigelF-ECM
Factor: 158241985390871316985848886105626085297408921 / (ECM curve 1, B1=3000000, B2=300000000, Sigma=3676258063523874)
2020-04-17Oliver KruseC-PRP
M6373/38239/140207/207849023/590432959/240506556332664361/2281781170953854076028519 : 9836C53712C4DDEB
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6373/38239/140207/207849023/590432959/240506556332664361/2281781170953854076028519 : 53781F72BC9AAABB
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6373/38239/140207/207849023/590432959/240506556332664361/2281781170953854076028519 : 53781F72BC9AAABB
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6373/known_factors : 53781F72BC9AAABB
PRP without proof (not generated)