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
8663Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
17327514.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000008203 / 16550
Estimated T-Level: 47.5
TF below 2^153 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseC5D5E0186EA71E471013
Verified2017-10-12kkmrkkblmbrbkC5D5E0186EA71E471764513
Verified2020-04-17Oliver KruseA14E3A67A7A1976E1298953
Verified2022-05-12Jorge CoveiroA14E3A67A7A1976E1638953
History
DateUserTypeResult
2023-08-12JacobZNF-PM1
B1=67000000000, B2=265422648792401100
2022-05-12Jorge CoveiroC-PRP
M8663/17327 : A14E3A67A7A1976E
PRP: Verified
PRP without proof (small exponent)
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M8663/17327 : A14E3A67A7A1976E
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M8663/17327 : C5D5E0186EA71E47
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M8663/17327 : C5D5E0186EA71E47
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M8663/17327 : C5D5E0186EA71E47
PRP without proof (not generated)