What comes after the "Factoring"

2003-12-12, 21:22

I just started and got a number, right now it's factoring it, what does it do after it's done factoring?

flava · 2003-12-12, 21:23

It will do a "P-1" test to find bigger factors, then it will start the LL test.

2003-12-12, 21:26

Do you know which takes the longest of all?

andi314 · 2003-12-12, 21:33

LL takes most of the time

rbarreira · 2003-12-12, 21:37

The LL (Lucas-Lehmer) Test is the longest part of the test. By the way, if factoring discovers any factor, it doesn't even do the Lucas Lehmer Test, because finding a factor means that the number is surely not prime.

Your Lucas Lehmer will take some time (probably more than one month) but be patient, since testing an exponent is a significant help to this project, not even comparable to the contribution a work unit represents on other distributed computing projects.

2003-12-15, 21:23

So if I wanted to do an LL test, would I check the "Request Mersenne numbers to run primality tests" in the configure primenet box?

Sorry for the newb question, just excited to be involved with the project. I'll try to possibly form a team, and get some of the people on my website involved with the program.

GP2 · 2003-12-15, 21:27

For most people, it's OK to just leave it the box checked at "Request whatever type of work makes the most sense".

In most cases, unless you have a fairly old computer, that will mean your computer will spend most of its time doing primality (Lucas-Lehmer) tests, and you'll have a shot at finding the next prime.

2003-12-12, 21:22	#1
Unregistered 1729₁₆ Posts	What comes after the "Factoring" I just started and got a number, right now it's factoring it, what does it do after it's done factoring?

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2003-12-12, 21:23	#2
flava Feb 2003 166₈ Posts	It will do a "P-1" test to find bigger factors, then it will start the LL test.

2003-12-12, 21:26	#3
Unregistered 1EDE₁₆ Posts	Do you know which takes the longest of all?

2003-12-12, 21:33	#4
andi314 Nov 2002 2·37 Posts	LL takes most of the time

2003-12-12, 21:37	#5
rbarreira Oct 2003 Portugal 11 Posts	The LL (Lucas-Lehmer) Test is the longest part of the test. By the way, if factoring discovers any factor, it doesn't even do the Lucas Lehmer Test, because finding a factor means that the number is surely not prime. Your Lucas Lehmer will take some time (probably more than one month) but be patient, since testing an exponent is a significant help to this project, not even comparable to the contribution a work unit represents on other distributed computing projects.

2003-12-15, 21:23	#6
baseballtwin86 2³·3·103 Posts	So if I wanted to do an LL test, would I check the "Request Mersenne numbers to run primality tests" in the configure primenet box? Sorry for the newb question, just excited to be involved with the project. I'll try to possibly form a team, and get some of the people on my website involved with the program.

2003-12-15, 21:27	#7
GP2 Sep 2003 5·11·47 Posts	For most people, it's OK to just leave it the box checked at "Request whatever type of work makes the most sense". In most cases, unless you have a fairly old computer, that will mean your computer will spend most of its time doing primality (Lucas-Lehmer) tests, and you'll have a shot at finding the next prime.