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
1339381Factored
FactorDigitsBitsDate
3107793004175888815192168.12014-03-20 16:58:02
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)nmainer164036B1B6A250CC0
Verified (Factored)Cornelius Caesar164036B1B6A250CC0
Verified (Factored)2010-03-17Bruce A Metcalf164036B1B6A250CC710908
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30Oliver KruseF31D446A5778C1F51013
Verified2017-10-23kkmrkkblmbrbkF31D446A5778C1F51106051313
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2017-10-23kkmrkkblmbrbkC-PRP
M1339381/310779300417588881519 : F31D446A5778C1F5
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1339381/310779300417588881519 : F31D446A5778C1F5
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-03-20Never Odd Or EvenF
Factor: 310779300417588881519 / TF: 68-69
2014-02-11Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-02-11Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-02-11Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-02-11Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-02-11Never Odd Or EvenNF
no factor from 2^65 to 2^66
2013-09-04David CampeauNF
no factor from 2^64 to 2^65
2012-08-02lycornNF
no factor from 2^61 to 2^64
2009-02-20Sturle SundeNF
no factor from 2^60 to 2^61