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:





MnDetails
2663
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
63913516.0old
15743657823.9old
39399120865089068411961.8old
1228330830080322129606306769913096.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000016147 / 40830
Estimated T-Level: 52.0 ⓘ
TF below 2^168 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver KruseCD7D53F10B272C534013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbkCD7D53F10B272C534013
Verified
No proof (small exponent)
2017-12-07ATHCD7D53F10B272C534132913
Verified
No proof (small exponent)
2020-04-17Oliver Kruse0209CB3E244B7E27436153
Verified
No proof (small exponent)
2024-02-03Wentao Huang0209CB3E244B7E274112453
History
DateUserTypeResult
2025-04-09masserNF-PP1Start=77/37, B1=4300000000, B2=4295700000000
2024-06-07masserNF-PM1B1=100000000000, B2=285451915603354500
2024-02-03Wentao HuangC-PRPM2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : 0209CB3E244B7E27
2021-07-05ViliamFNF-PM1B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRPM2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : 0209CB3E244B7E27
2017-12-07ATHC-PRPM2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : CD7D53F10B272C53
2017-10-02kkmrkkblmbrbkC-PRPM2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : CD7D53F10B272C53
2017-09-21Oliver KruseC-PRPM2663/known_factors : CD7D53F10B272C53
2005-11-01-anonymous-F-ECMFactor: 122833083008032212960630676991
2005-11-01-anonymous-FFactor: 3939912086508906841