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
1441049Factored
FactorDigitsBitsDate
3998718671975969045592168.42008-12-18 09:36:37
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)Paul Bublitz98A0DA7F2E3A1A950
Verified (Factored)1998-12-27David Phillips98A0DA7F2E3A1A95944056
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-01Oliver Kruse1591E41AE4CC9D941013
Verified2017-10-27kkmrkkblmbrbk1591E41AE4CC9D94196437913
History
DateUserTypeResult
2017-10-27kkmrkkblmbrbkC-PRP
M1441049/399871867197596904559 : 1591E41AE4CC9D94
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M1441049/399871867197596904559 : 1591E41AE4CC9D94
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-12-18James HeinrichF-ECM
Factor: 399871867197596904559