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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
7559Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
172688395078631444.0old
85303160668804091652.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002050 / 9201
Estimated T-Level: 41.1
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse99C0CA934CB94CDD2013
Verified2017-10-12kkmrkkblmbrbk99C0CA934CB94CDD2662713
Verified2020-04-17Oliver KruseD6CB6008F3BA69CE2180453
Verified2024-02-03Wentao HuangD6CB6008F3BA69CE2726253
History
DateUserTypeResult
2024-12-06yuriy5-1NF-PM1
B1=12000000000, B2=28109516288023170
2024-02-03Wentao HuangC-PRP
M7559/17268839507863/8530316066880409 : D6CB6008F3BA69CE
PRP: Verified
PRP without proof (small exponent)
2021-07-07ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7559/17268839507863/8530316066880409 : D6CB6008F3BA69CE
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7559/17268839507863/8530316066880409 : 99C0CA934CB94CDD
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7559/17268839507863/8530316066880409 : 99C0CA934CB94CDD
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7559/17268839507863/8530316066880409 : 99C0CA934CB94CDD
PRP without proof (not generated)