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
1786331Factored
FactorDigitsBitsDate
3572663721.8old
1543674828232698711857.12015-05-25 11:27:38
7474074693505040830653112479.32020-05-29 16:46:51
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30alpertron9151E706EC444FAC2013
Verified (Factored)2017-10-19Oliver Kruse9151E706EC444FAC298043113
Verified2020-05-30mnd96F704BCF1B396DF73157049853
Verified2020-05-31Oliver Kruse6F704BCF1B396DF73165630653
History
DateUserTypeResult
2020-05-31Oliver KruseC-PRP
M1786331/3572663/154367482823269871/747407469350504083065311 : 6F704BCF1B396DF7
PRP: Verified
PRP without proof (not generated)
2020-05-30mnd9C-PRP
M1786331/3572663/154367482823269871/747407469350504083065311 : 6F704BCF1B396DF7
PRP: Verified
PRP without proof (not generated)
2020-05-29nordiF-ECM
Factor: 747407469350504083065311 / (ECM curve 120, B1=50000, B2=5000000, Sigma=6633790270943815)
2017-10-19Oliver KruseC-PRP
M1786331/3572663/154367482823269871 : 9151E706EC444FAC
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1786331/154367482823269871/3572663 : 9151E706EC444FAC
PRP: Verified
PRP without proof (not generated)
2015-05-25TJAOIF
Factor: 154367482823269871 / TF: 57-58