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Old 2021-03-10, 15:33   #1
JuanTutors
 
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Default What am I certifying in this case?

I was assigned 10619723 for certification work, but this exponent already has three known factors. Am I certifying the PRP test on the full exponent, or on one of its factors? And if I am certifying the PRP test on the full exponent, what is the purpose of this?
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Old 2021-03-10, 16:27   #2
Happy5214
 
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Quote:
Originally Posted by JuanTutors View Post
I was assigned 10619723 for certification work, but this exponent already has three known factors. Am I certifying the PRP test on the full exponent, or on one of its factors? And if I am certifying the PRP test on the full exponent, what is the purpose of this?
The PRP test was performed on the cofactor, what's left over when the three known prime factors are divided out of that Mersenne number, and you're certifying that PRP test. I guess in a way the cofactor itself is a factor, but don't get it confused with the factors you find with TF, P-1, and ECM.

Last fiddled with by Happy5214 on 2021-03-10 at 16:28
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Old 2021-03-10, 17:25   #3
Viliam Furik
 
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Quote:
Originally Posted by JuanTutors View Post
I was assigned 10619723 for certification work, but this exponent already has three known factors. Am I certifying the PRP test on the full exponent, or on one of its factors? And if I am certifying the PRP test on the full exponent, what is the purpose of this?
You are certifying a whole PRP test on the cofactor, which in size is almost the same as the whole number. Certification on these 10M exponents is very fast, compared to 100M exponents. You certify that the test was done without errors by running a few iterations of the test, not the whole test.
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Old 2021-03-12, 07:56   #4
LaurV
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Adding to what anteposters said, if you are not happy with CERT work, you can disable it in P95, from the workers menu.
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Old 2021-03-12, 13:54   #5
JuanTutors
 
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Originally Posted by LaurV View Post
Adding to what anteposters said, if you are not happy with CERT work, you can disable it in P95, from the workers menu.
Nah, it's just a few minutes. I just needed to check what that was.
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