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
6451Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
18353457455699591387932270.6old
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 Kruse76CFF5EFEA91B94D1013
Verified2017-10-12kkmrkkblmbrbk76CFF5EFEA91B94D1199313
Verified2020-04-17Oliver Kruse21230E5E9DEB6C40132253
Verified2024-02-03Wentao Huang21230E5E9DEB6C40195153
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6451/1835345745569959138793 : 21230E5E9DEB6C40
PRP: Verified
PRP without proof (small exponent)
2023-08-07-Anonymous-NF-PM1
B1=38000000000, B2=159095079570076650
2021-08-02ViliamFNF-PM1
B1=500000000, B2=90500000000
2020-04-17Oliver KruseC-PRP
M6451/1835345745569959138793 : 21230E5E9DEB6C40
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6451/1835345745569959138793 : 76CFF5EFEA91B94D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6451/1835345745569959138793 : 76CFF5EFEA91B94D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6451/1835345745569959138793 : 76CFF5EFEA91B94D
PRP without proof (not generated)