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
4523Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
196518213917291444.2old
25960505645976720589567692581.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000017621 / 40830
Estimated T-Level: 52.2
TF below 2^168 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseC05315FA98C0764E2013
Verified2017-10-02kkmrkkblmbrbkC05315FA98C0764E2013
Verified2017-12-07ATHC05315FA98C0764E25113
Verified2020-04-17Oliver KruseE392A5181F40D0ED2380853
Verified2024-02-03Wentao HuangE392A5181F40D0ED2196353
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M4523/19651821391729/2596050564597672058956769 : E392A5181F40D0ED
PRP: Verified
PRP without proof (small exponent)
2023-05-24-Anonymous-NF-PM1
B1=71000000000, B2=711884755657775700
2021-07-07ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M4523/19651821391729/2596050564597672058956769 : E392A5181F40D0ED
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M4523/19651821391729/2596050564597672058956769 : C05315FA98C0764E
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M4523/19651821391729/2596050564597672058956769 : C05315FA98C0764E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4523/known_factors : C05315FA98C0764E
PRP without proof (not generated)