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
1843981Factored
FactorDigitsBitsDate
107574395411220438312063.22011-05-07 06:36:33
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.
LL
StatusDateUserResidueShift
Verified (Factored)Marc HoneyDDECE9C13173C1270
Verified (Factored)Joel SmithDDECE9C13173C1270
Verified (Factored)1999-02-21Carl MikkelsenDDECE9C13173C1271759549
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-04Oliver KruseA8B22B4B8381318D1013
Verified2017-11-06kkmrkkblmbrbkA8B22B4B8381318D1103447013
History
DateUserTypeResult
2022-04-03JossNF-PM1
B1=1000000, B2=10192272090
2022-04-03JossNF-PM1
B1=1000000, B2=1035044010
2017-11-06kkmrkkblmbrbkC-PRP
M1843981/10757439541122043831 : A8B22B4B8381318D
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1843981/10757439541122043831 : A8B22B4B8381318D
PRP: Verified
PRP without proof (not generated)
2011-05-07XyzzyF-ECM
Factor: 10757439541122043831
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-08Architects CubedNF
no factor from 2^60 to 2^61