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
9181Factored
FactorDigitsBitsDate
1377151720.4old
5425845456549715271858.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001282 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse27DC446F67717F222013
Verified2017-10-12kkmrkkblmbrbk27DC446F67717F222832613
Unverified2020-04-17Oliver KruseE3D3E86F23CC06__2429053
History
DateUserTypeResult
2023-07-13JacobZNF-PM1
B1=63000000000, B2=255469764292442700
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M9181/1377151/542584545654971527 : E3D3E86F23CC06__
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M9181/1377151/542584545654971527 : 27DC446F67717F22
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9181/1377151/542584545654971527 : 27DC446F67717F22
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9181/1377151/542584545654971527 : 27DC446F67717F22
PRP without proof (not generated)