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
63793Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1020689720.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000537 / 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 KruseA2B178BE9F4E6F4B1013
Verified2017-10-13kkmrkkblmbrbkA2B178BE9F4E6F4B11268713
Verified2020-04-17Oliver KruseE66B72C17F14399B1209953
Verified2024-02-03Wentao HuangE66B72C17F14399B15236953
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M63793/1020689 : E66B72C17F14399B
PRP: Verified
PRP without proof (small exponent)
2022-11-12George WoltmanNF-PM1
B1=1000000000, B2=92348999993250
2021-04-30ATHNF-PP1
Start=2/7, B1=15000000, B2=1500000000
2020-04-17Oliver KruseC-PRP
M63793/1020689 : E66B72C17F14399B
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M63793/1020689 : A2B178BE9F4E6F4B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M63793/1020689 : A2B178BE9F4E6F4B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M63793/1020689 : A2B178BE9F4E6F4B
PRP without proof (not generated)
2016-10-21kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12