Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
154081Factored
FactorDigitsBitsDate
715516352720016784938968632685.92009-10-01 22:22:31
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000176 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Gary Gostin76DB0
Verified (Factored)Amdahl 6 - 198905A0F6DB0
Verified (Factored)George Johnston3BE8259245A0F6DB0
Verified (Factored)Brian J. Beesley3BE8259245A0F6DB0
Verified (Factored)Eivind Triel3BE8259245A0F6DB23770
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse45645B325BEB0F721013
Verified2017-10-11kkmrkkblmbrbk45645B325BEB0F721445013
Verified2020-04-17Oliver Kruse342A61504FB3E2E819741553
Verified2024-02-03Wentao Huang342A61504FB3E2E8115230353
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M154081/71551635272001678493896863 : 342A61504FB3E2E8
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^57 to 2^58
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-17Oliver KruseC-PRP
M154081/71551635272001678493896863 : 342A61504FB3E2E8
PRP: Verified
PRP without proof (small exponent)
2017-10-11kkmrkkblmbrbkC-PRP
M154081/71551635272001678493896863 : 45645B325BEB0F72
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M154081/71551635272001678493896863 : 45645B325BEB0F72
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M154081/71551635272001678493896863 : 45645B325BEB0F72
PRP without proof (not generated)
2016-12-02kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2009-10-01Sturle SundeF-ECM
Factor: 71551635272001678493896863
2009-02-07Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-11axnNF-PM1
B1=5000000, B2=200000000, E=12
2008-12-31Sturle SundeNF
no factor from 2^58 to 2^59