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
1351283Factored
FactorDigitsBitsDate
32185282221891083511961.52011-05-09 14:43:22
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)David Slowinski12860
Verified (Factored)Jason Kline9DEDB2A97BBE12860
Verified (Factored)Rob Vassar9DEDB2A97BBE12860
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30Oliver KruseA469D1EC320DD5D01013
Verified2017-10-24kkmrkkblmbrbkA469D1EC320DD5D01129867213
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2017-10-24kkmrkkblmbrbkC-PRP
M1351283/3218528222189108351 : A469D1EC320DD5D0
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1351283/3218528222189108351 : A469D1EC320DD5D0
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2011-05-09XyzzyF-ECM
Factor: 3218528222189108351
2009-02-18Sturle SundeNF
no factor from 2^60 to 2^61