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
8009
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
5557981055071911549.0old
1983248018383318584472167.4old
83054644929734864295647592582.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000010766 / 40830
Estimated T-Level: 51.3 ⓘ
TF below 2^165 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 KruseBA25B7DA3AF94AC63013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbkBA25B7DA3AF94AC63013
Verified
No proof (small exponent)
2017-12-07ATHBA25B7DA3AF94AC63297113
Verified
No proof (small exponent)
2020-04-17Oliver Kruse4A72953D213973DB3385153
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk4A72953D213973DB328653
History
DateUserTypeResult
2025-05-29masserNF-PP1Start=191/13, B1=1300000000, B2=1298700000000
2024-07-01kkmrkkblmbrbkC-PRPM8009/198324801838331858447/555798105507191/8305464492973486429564759 : 4A72953D213973DB
2023-06-01JacobZNF-PM1B1=74000000000, B2=302392782203912400
2022-07-06some-studentsNF-PM1B1=1000000000
2021-12-16ANONYMOUSNF-PM1B1=100000000
2020-04-17Oliver KruseC-PRPM8009/555798105507191/198324801838331858447/8305464492973486429564759 : 4A72953D213973DB
2017-12-07ATHC-PRPM8009/555798105507191/198324801838331858447/8305464492973486429564759 : BA25B7DA3AF94AC6
2017-10-02kkmrkkblmbrbkC-PRPM8009/555798105507191/198324801838331858447/8305464492973486429564759 : BA25B7DA3AF94AC6
2017-09-21Oliver KruseC-PRPM8009/known_factors : BA25B7DA3AF94AC6
2009-03-02kiwiboyFFactor: 555798105507191