Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
4639Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
194839617.6old
15570061271030.5old
78227908745831342.8old
33331815160804891164703311533792102125739128.02009-05-06 16:49:04
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000013969 / 40830
Estimated T-Level: 51.7
TF below 2^167 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse44CD353B09351B8B4013
Verified2017-10-02kkmrkkblmbrbk44CD353B09351B8B4013
Verified2017-12-07ATH44CD353B09351B8B4246113
Verified2020-04-17Oliver Kruse8DA0BEFF052A4F904152053
Verified2024-02-03Wentao Huang8DA0BEFF052A4F904286153
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M4639/194839/1557006127/7822790874583/333318151608048911647033115337921021257 : 8DA0BEFF052A4F90
PRP: Verified
PRP without proof (small exponent)
2023-05-26-Anonymous-NF-PM1
B1=69000000000, B2=691971895408493700
2021-07-08ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M4639/194839/1557006127/7822790874583/333318151608048911647033115337921021257 : 8DA0BEFF052A4F90
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M4639/194839/1557006127/7822790874583/333318151608048911647033115337921021257 : 44CD353B09351B8B
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M4639/194839/1557006127/7822790874583/333318151608048911647033115337921021257 : 44CD353B09351B8B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4639/known_factors : 44CD353B09351B8B
PRP without proof (not generated)
2009-05-06unconnectedF-ECM
Factor: 333318151608048911647033115337921021257