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:










MnStatusDetails
4643Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
275963898852106032118260353512994.5old
10672006800525908687267540972207132540706921745146.32014-03-26 14:08:18
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000015644 / 40830
Estimated T-Level: 51.9
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 Kruse4B3D9068EF0C6BCE2013
Verified2017-10-02kkmrkkblmbrbk4B3D9068EF0C6BCE2013
Verified2017-12-07ATH4B3D9068EF0C6BCE213913
Verified2020-04-17Oliver Kruse53ED70F51F754B922303453
Verified2024-02-03Wentao Huang53ED70F51F754B922384153
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M4643/27596389885210603211826035351/106720068005259086872675409722071325407069217 : 53ED70F51F754B92
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
M4643/27596389885210603211826035351/106720068005259086872675409722071325407069217 : 53ED70F51F754B92
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M4643/27596389885210603211826035351/106720068005259086872675409722071325407069217 : 4B3D9068EF0C6BCE
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M4643/27596389885210603211826035351/106720068005259086872675409722071325407069217 : 4B3D9068EF0C6BCE
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4643/known_factors : 4B3D9068EF0C6BCE
PRP without proof (not generated)
2014-03-26Matthias WurtingerF-ECM
Factor: 106720068005259086872675409722071325407069217