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
156727Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
13679293206021417043300529606483933106.82009-10-30 04:10:37
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000173 / 1566
Estimated T-Level: 30.6
TF below 2^96 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Gary Gostin599C0
Verified (Factored)Amdahl 6 - 198901B7599C0
Verified (Factored)George Johnston9359475E81B7599C0
Verified (Factored)Brian J. Beesley9359475E81B7599C0
Verified (Factored)Eivind Triel9359475E81B7599C138171
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse8F6886617DC6B9581013
Verified2017-10-11kkmrkkblmbrbk8F6886617DC6B95818426813
Verified2020-04-17Oliver Kruse4CC9C4D2AB7DEED3112318453
Verified2024-02-03Wentao Huang4CC9C4D2AB7DEED3114819953
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M156727/136792932060214170433005296064839 : 4CC9C4D2AB7DEED3
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
M156727/136792932060214170433005296064839 : 4CC9C4D2AB7DEED3
PRP: Verified
PRP without proof (small exponent)
2017-10-11kkmrkkblmbrbkC-PRP
M156727/136792932060214170433005296064839 : 8F6886617DC6B958
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M156727/136792932060214170433005296064839 : 8F6886617DC6B958
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M156727/136792932060214170433005296064839 : 8F6886617DC6B958
PRP without proof (not generated)
2016-12-16kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2009-10-30OS1F-ECM
Factor: 136792932060214170433005296064839
2009-01-26Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-12axnNF-PM1
B1=5000000, B2=200000000, E=12
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59