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
101399Factored
FactorDigitsBitsDate
202799617.6old
811193619.62008-07-26 09:16:55
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000271 / 1566
Estimated T-Level: 30.9 ⓘ
TF below 2^98 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver KruseC0FD07E5A63293CA2013
Verified2017-10-13kkmrkkblmbrbkC0FD07E5A63293CA21784413
Verified2020-04-17Oliver Kruse68CFEB20E80D8DC924361453
Verified2022-04-15LordJulius68CFEB20E80D8DC924981753
Verified (Factored)2022-05-12Jorge Coveiro68CFEB20E80D8DC913745953
Verified2022-10-21LordJulius68CFEB20E80D8DC929796353
Verified2022-10-27LordJulius68CFEB20E80D8DC924120553
History
DateUserTypeResult
2022-10-27LordJuliusC-PRP
M101399/202799/811193 : 68CFEB20E80D8DC9
PRP: Verified
PRP without proof (small exponent)
2022-10-24LordJuliusNF
no factor from 2^66 to 2^67
2022-10-24LordJuliusNF
no factor from 2^65 to 2^66
2022-10-24LordJuliusNF
no factor from 2^64 to 2^65
2022-10-24LordJuliusNF
no factor from 2^63 to 2^64
2022-10-24LordJuliusNF
no factor from 2^62 to 2^63
2022-10-21LordJuliusC-PRP
M101399/202799/811193 : 68CFEB20E80D8DC9
PRP: Verified
PRP without proof (small exponent)
2022-05-12Jorge CoveiroC-PRP
M101399/202799 : 68CFEB20E80D8DC9
PRP: Verified
PRP without proof (small exponent)
2022-04-15LordJuliusC-PRP
M101399/202799/811193 : 68CFEB20E80D8DC9
PRP: Verified
PRP without proof (small exponent)
2022-04-13LordJuliusNF
no factor from 2^61 to 2^62
2022-04-13LordJuliusNF
no factor from 2^60 to 2^61
2022-04-13LordJuliusNF
no factor from 2^59 to 2^60
2022-04-13LordJuliusNF
no factor from 2^58 to 2^59
2022-04-13LordJuliusNF
no factor from 2^57 to 2^58
2021-12-19Seth_TrNF-PM1
B1=1000000000, B2=6735532633830
2020-04-17Oliver KruseC-PRP
M101399/202799/811193 : 68CFEB20E80D8DC9
PRP: Verified
PRP without proof (small exponent)
2018-11-02J.R. AllenNF
no factor from 2^59 to 2^60
2018-11-02J.R. AllenNF
no factor from 2^58 to 2^59
2018-11-02J.R. AllenNF
no factor from 2^57 to 2^58
2018-10-25J.R. AllenNF
no factor from 2^52 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M101399/202799/811193 : C0FD07E5A63293CA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M101399/202799/811193 : C0FD07E5A63293CA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M101399/202799/811193 : C0FD07E5A63293CA
PRP without proof (not generated)
2016-11-02kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-07-26J FeitsmaF
Factor: 811193