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
2579Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
19868617824.2old
9618353265771239.8old
295911959388201332312871796332994.6old
138007084217384499387358420527233532032562619346150.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
551100000007797 / 40830
Estimated T-Level: 51.0
TF below 2^164 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse4E1D632C2201C97A4013
Verified2017-10-02kkmrkkblmbrbk4E1D632C2201C97A4013
Verified2017-12-07ATH4E1D632C2201C97A485313
Verified2020-04-17Oliver Kruse40B5E55B7CC139FA4102153
Verified2024-02-03Wentao Huang40B5E55B7CC139FA465553
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M2579/19868617/961835326577/29591195938820133231287179633/1380070842173844993873584205272335320325626193 : 40B5E55B7CC139FA
PRP: Verified
PRP without proof (small exponent)
2022-03-17mikrNF-PM1
B1=60000000000, B2=314766415184771550
2021-07-05ViliamFNF-PM1
B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRP
M2579/19868617/961835326577/29591195938820133231287179633/1380070842173844993873584205272335320325626193 : 40B5E55B7CC139FA
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M2579/19868617/961835326577/29591195938820133231287179633/1380070842173844993873584205272335320325626193 : 4E1D632C2201C97A
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M2579/19868617/961835326577/29591195938820133231287179633/1380070842173844993873584205272335320325626193 : 4E1D632C2201C97A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M2579/known_factors : 4E1D632C2201C97A
PRP without proof (not generated)