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
59617Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
72980746731032.8old
424334728571135.32008-08-26 20:08:50
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000596 / 4588
Estimated T-Level: 35.6
TF below 2^113 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse4A99E08C17B2F8752013
Verified2017-10-13kkmrkkblmbrbk4A99E08C17B2F8752169513
Verified2020-04-17Oliver KruseACCADF1F6461ADE224135253
Verified2024-02-03Wentao HuangACCADF1F6461ADE222081953
History
DateUserTypeResult
2025-08-04masserNF-PM1
B1=6000000000, B2=908111149095150
2024-02-03Wentao HuangC-PRP
M59617/7298074673/42433472857 : ACCADF1F6461ADE2
PRP: Verified
PRP without proof (small exponent)
2023-05-14JacobZNF-PM1
B1=580000000, B2=261546772326840
2021-05-07ATHNF-PP1
Start=2/7, B1=15000000, B2=1500000000
2020-04-17Oliver KruseC-PRP
M59617/7298074673/42433472857 : ACCADF1F6461ADE2
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M59617/7298074673/42433472857 : 4A99E08C17B2F875
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M59617/7298074673/42433472857 : 4A99E08C17B2F875
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M59617/7298074673/42433472857 : 4A99E08C17B2F875
PRP without proof (not generated)
2016-10-10kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-08-26-Anonymous-F
Factor: 42433472857