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
2745121Factored
FactorDigitsBitsDate
7074727079508490812732169.32009-04-03 02:41:10
ECM
DigitsB1Curves
25500004 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-03-17Bartholomew Barker66386933092496CC0
Verified (Factored)1999-05-09Mateusz66386933092496CC541095
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-20Oliver KruseE3E2E01956DC640F1145650953
Verified2017-12-05kkmrkkblmbrbkE3E2E01956DC640F1252218253
History
DateUserTypeResult
2023-01-27USAFSSNF-PM1
B1=288000, B2=226423890
2022-03-11LordJuliusNF
no factor from 2^1 to 2^60
2017-12-05kkmrkkblmbrbkC-PRP
M2745121/707472707950849081273 : E3E2E01956DC640F
PRP: Verified
PRP without proof (not generated)
2017-10-20Oliver KruseC-PRP
M2745121/707472707950849081273 : E3E2E01956DC640F
PRP: Verified
PRP without proof (not generated)
2009-04-03ksimsF-ECM
Factor: 707472707950849081273
2009-01-31Sturle SundeNF
no factor from 2^60 to 2^61