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
8543Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
31623375011291341.5old
35664803213572752971961.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000005575 / 16550
Estimated T-Level: 46.7
TF below 2^150 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse4282A5F6C23607452013
Verified2017-10-12kkmrkkblmbrbk4282A5F6C23607452345113
Verified2020-04-17Oliver Kruse93B5B78DA4FD738C2141753
Verified2024-07-01kkmrkkblmbrbk93B5B78DA4FD738C2575953
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M8543/3162337501129/3566480321357275297 : 93B5B78DA4FD738C
PRP: Verified
PRP without proof (small exponent)
2023-08-18JacobZNF-PM1
B1=69000000000, B2=265422648792401100
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M8543/3162337501129/3566480321357275297 : 93B5B78DA4FD738C
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M8543/3162337501129/3566480321357275297 : 4282A5F6C2360745
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M8543/3162337501129/3566480321357275297 : 4282A5F6C2360745
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M8543/3162337501129/3566480321357275297 : 4282A5F6C2360745
PRP without proof (not generated)