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

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MnStatusDetails
2399Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
4799412.2old
5201033722.3old
25712391267838479374226588712891.1old
17405071390815188529021748229123584544813495345147.02010-11-14 15:59:50
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000061845 / 105362
Estimated T-Level: 57.9
TF below 2^187 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseC7F9A250FF2AEF2C4013
Verified2017-10-02kkmrkkblmbrbkC7F9A250FF2AEF2C4013
Verified2017-12-07ATHC7F9A250FF2AEF2C472113
Verified2020-04-17Oliver KruseA6CA6AE826387295441653
Verified (Factored)2022-05-12Jorge CoveiroA6CA6AE8263872951108353
Verified2024-02-03Wentao HuangA6CA6AE826387295483353
History
DateUserTypeResult
2024-04-29masserNF-PM1
B1=100000000000, B2=286168760135157900
2024-02-03Wentao HuangC-PRP
M2399/4799/5201033/2571239126783847937422658871/174050713908151885290217482291235845448134953 : A6CA6AE826387295
PRP: Verified
PRP without proof (small exponent)
2022-05-12Jorge CoveiroC-PRP
M2399/4799 : A6CA6AE826387295
PRP: Verified
PRP without proof (small exponent)
2020-04-17Oliver KruseC-PRP
M2399/4799/5201033/2571239126783847937422658871/174050713908151885290217482291235845448134953 : A6CA6AE826387295
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M2399/4799/5201033/2571239126783847937422658871/174050713908151885290217482291235845448134953 : C7F9A250FF2AEF2C
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M2399/4799/5201033/2571239126783847937422658871/174050713908151885290217482291235845448134953 : C7F9A250FF2AEF2C
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M2399/known_factors : C7F9A250FF2AEF2C
PRP without proof (not generated)
2016-09-09kkmrkkblmbrbkNF-PM1
B1=500000000, B2=50000000000, E=12
2010-11-14Matthias WurtingerF-ECM
Factor: 174050713908151885290217482291235845448134953