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
6619
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
471762607928.8old
2179534776098888343272172159445204924138124.0old
5319159511726673814175836542601166836743185160947155.22021-03-28 13:44:40
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000002455 / 16550
Estimated T-Level: 45.7 ⓘ
TF below 2^147 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 KruseDCD2BD6DE98574732013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkDCD2BD6DE98574732013
Factored
No proof (small exponent)
2017-12-07ATHDCD2BD6DE98574732498213
Factored
No proof (small exponent)
2020-04-17Oliver Kruse8B47D73ABCC29C352174453
Verified
No proof (small exponent)
2021-03-28Conductor52F8C7397E58968B3335813
Verified
No proof (small exponent)
2021-03-28mikr8B47D73ABCC29C353460753
Verified
No proof (small exponent)
2021-03-29Oliver Kruse8B47D73ABCC29C353117253
Verified
No proof (small exponent)
2024-07-09kkmrkkblmbrbk52F8C7397E58968B3385813
History
DateUserTypeResult
2025-03-21masserNF-PP1Start=126/59, B1=1000000000, B2=999000000000
2025-03-13masserNF-PP1Start=6/5, B1=1000000000, B2=999000000000
2025-03-04masserNF-PP1Start=2/7, B1=1000000000, B2=999000000000
2024-07-09kkmrkkblmbrbkC-PRPM6619/21795347760988883432721721594452049241/471762607/53191595117266738141758365426011668367431851609 : 52F8C7397E58968B
2023-08-10-anonymous-NF-PM1B1=37000000000, B2=148599418701633900
2021-12-17Oliver KruseNF-PM1B1=1000000000, B2=1003954060639530
2021-03-29Oliver KruseC-PRPM6619/471762607/21795347760988883432721721594452049241/53191595117266738141758365426011668367431851609 : 8B47D73ABCC29C35
2021-03-28mikrC-PRPM6619/471762607/21795347760988883432721721594452049241/53191595117266738141758365426011668367431851609 : 8B47D73ABCC29C35
2021-03-28ConductorC-PRPM6619/471762607/21795347760988883432721721594452049241/53191595117266738141758365426011668367431851609 : 52F8C7397E58968B
2021-03-28Ryan PropperF-ECMFactor: 53191595117266738141758365426011668367431851609
2020-04-17Oliver KruseC-PRPM6619/471762607/21795347760988883432721721594452049241 : 8B47D73ABCC29C35
2017-12-07ATHC-PRPM6619/471762607/21795347760988883432721721594452049241 : DCD2BD6DE9857473
2017-10-02kkmrkkblmbrbkC-PRPM6619/471762607/21795347760988883432721721594452049241 : DCD2BD6DE9857473
2017-09-21Oliver KruseC-PRPM6619/known_factors : DCD2BD6DE9857473