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

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Exponent Range:





MnDetails
11321
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
29230823824.8old
298368366077351985249112374.72008-08-29 02:24:27
264105021704944623501930072684.42008-08-29 02:24:27
5326642839400658921661491115818722335115.42019-01-15 03:06:25
P-1 factors
DateFactorsB1B2
2023-01-20No new factors discovered100000000000122192573512709696
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002412 / 9201
Estimated T-Level: 41.3 ⓘ
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver KruseF1AA5BD8D00F2BAA3013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkF1AA5BD8D00F2BAA3013
Factored
No proof (small exponent)
2017-12-07ATHF1AA5BD8D00F2BAA3237913
Verified
No proof (small exponent)
2019-01-16M89093875CDB71362E3578DE422653
Verified
No proof (small exponent)
2019-01-18ANONYMOUS5CDB71362E3578DE4673953
History
DateUserTypeResult
2025-03-16masserNF-PP1Start=106/53, B1=430000000, B2=43000000000
2025-03-02masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-24masserNF-PP1Start=2/7, B1=640000000, B2=639360000000
2023-01-20-anonymous-F-PM1Factor: 29836836607735198524911 / B1=100000000000, B2=122192573512709700
2019-01-18ANONYMOUSC-PRPM11321/29230823/29836836607735198524911/26410502170494462350193007/53266428394006589216614911158187223 : 5CDB71362E3578DE
2019-01-16M8909387C-PRPM11321/29230823/29836836607735198524911/26410502170494462350193007/53266428394006589216614911158187223 : 5CDB71362E3578DE
2019-01-15James HintzF-ECMFactor: 53266428394006589216614911158187223
2017-12-07ATHC-PRPM11321/29230823/29836836607735198524911/26410502170494462350193007 : F1AA5BD8D00F2BAA
2017-10-02kkmrkkblmbrbkC-PRPM11321/29230823/29836836607735198524911/26410502170494462350193007 : F1AA5BD8D00F2BAA
2017-09-21Oliver KruseC-PRPM11321/29230823/29836836607735198524911/26410502170494462350193007 : F1AA5BD8D00F2BAA
2017-09-21Oliver KruseC-PRPM11321/29230823/29836836607735198524911/26410502170494462350193007 : F1AA5BD8D00F2BAA
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2008-08-29-anonymous-F-ECMFactor: 26410502170494462350193007
2008-08-29-anonymous-F-ECMFactor: 29836836607735198524911