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
380203Factored
FactorDigitsBitsDate
335676801563039591754.9old
702379609100758791756.02008-08-26 20:13:15
ECM
DigitsB1Curves
2550000280 / 280
30250000222 / 640
Estimated T-Level: 26.7
TF below 2^84 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver Kruse1B694CD11D57439D2013
Verified2017-11-02kkmrkkblmbrbk1B694CD11D57439D212566813
Unverified (Reliable)2020-04-18Oliver KruseB18A51745D8D8B__210976153
P-1 factors
DateFactorB1B2
2021-03-167023796091007587959347533
History
DateUserTypeResult
2023-10-26gLaussNF-PP1
Start=2/7, B1=7500000, B2=307500000
2023-10-26gLaussNF-PM1
B1=15000000, B2=293087544750
2021-03-16manrusF-PM1
Factor: 70237960910075879 / (P-1, B1=593, B2=47533)
2020-04-18Oliver KruseC-PRP
M380203/33567680156303959/70237960910075879 : B18A51745D8D8B__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M380203/33567680156303959/70237960910075879 : 1B694CD11D57439D
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M380203/33567680156303959/70237960910075879 : 1B694CD11D57439D
PRP: Unverified (Reliable)
PRP without proof (not generated)
2008-08-26-Anonymous-F-ECM
Factor: 70237960910075879