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Old 2020-07-22, 03:11   #1
Mar 2019

5×11 Posts
Default Help me understand this result?

This was assigned to me (as opposed to me getting it manually). I'm having trouble understanding the results:

1. If it has been Factored, why is my result, and the one before mine, saying its a probable prime?
2. Why is the residue "PRP_PRP_PRP_PRP_"? That doesn't seem right?

Granted, I'm not very knowledgeable on the subject, I just like to Trial Factor mostly. Thanks!
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Old 2020-07-22, 03:53   #2
retina's Avatar
"The unspeakable one"
Jun 2006
My evil lair

3×29×71 Posts

The number had three known small factors.

So you were assigned the task to determine if the remainder is also a prime. And your result shows it is a prime with good probability, so the remainder is PRP, a probable prime.

Therefore that number is now fully factored (if you assume the PRP result is a real prime).
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Old 2020-07-22, 03:54   #3
6809 > 6502
Uncwilly's Avatar
Aug 2003
101×103 Posts

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The remaining cofactor is a Probable Prime.
There are 3 factors listed. What is left after those are divide out looks to be a prime. Rejoice as this is fully factored now.
Here is the remaining cofactor

Last fiddled with by Uncwilly on 2020-07-22 at 04:00
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Old 2020-07-23, 14:28   #4
Feb 2016
! North_America

10100012 Posts

Why wouldn't the server assign type 5 prp-cf test? It uses type 5 when there's a factor known...

I must be missing something.
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Old 2020-07-23, 14:37   #5
kruoli's Avatar
Sep 2017
Porta Westfalica, DE

232 Posts

"Older" Versions of Prime95 default to type 1. The newer ones doesn't. And if there is a PRP-CF, the DC of it will always be with the same type.
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