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
6473Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2796337721.4old
81454774280411342.9old
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 Kruse6BB4C0721228180A2013
Verified2017-10-12kkmrkkblmbrbk6BB4C0721228180A213213
Verified2020-04-17Oliver KruseAC9621E37DEC00D6273653
Verified2024-02-03Wentao HuangAC9621E37DEC00D62393953
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6473/2796337/8145477428041 : AC9621E37DEC00D6
PRP: Verified
PRP without proof (small exponent)
2023-08-07-Anonymous-NF-PM1
B1=38000000000, B2=159095079570076650
2021-12-17Oliver KruseNF-PM1
B1=1000000000, B2=1006397938886340
2020-04-17Oliver KruseC-PRP
M6473/2796337/8145477428041 : AC9621E37DEC00D6
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6473/2796337/8145477428041 : 6BB4C0721228180A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6473/2796337/8145477428041 : 6BB4C0721228180A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6473/2796337/8145477428041 : 6BB4C0721228180A
PRP without proof (not generated)