mersenneforum.org  

Go Back   mersenneforum.org > Prime Search Projects > Sierpinski/Riesel Base 5

Reply
 
Thread Tools
Old 2007-03-12, 18:30   #1
kuratkull
 
kuratkull's Avatar
 
Mar 2007
Estonia

33·5 Posts
Default I just don't understand this

Hello :)

I have been actively surfing the forums for the past few days, but I haven't gotten a clear answer to my question.

After sr5sieve has finished sieving, what are the results? Only factors? Does this also find primes? Do I have to run the output in LLR to get something?
As I understand, I just have to sieve it, and send the output file via email. What will the data be used for?

What do these lines mean anyway?:
Quote:
5866607967677 | 131848*5^1131027-1
5866623602911 | 200062*5^658953-1
5866639831141 | 280558*5^367225-1

Last fiddled with by kuratkull on 2007-03-12 at 18:35
kuratkull is offline   Reply With Quote
Old 2007-03-12, 20:56   #2
michaf
 
michaf's Avatar
 
Jan 2005

479 Posts
Default

sr5sieve is indeed the program used to search for FACTORS of the list of candidates to test for primes.
Whenever you find a factor, you know a number is not prime, therefor you need not test it for primality anymore. (Saving time on that of course)

5866607967677 | 131848*5^1131027-1
means that the number 131848*5^1131027-1 has a factor 5866607967677.
Thus that number isn't prime.

In short, your data will be used to shorten the list of candidates to test for primality. The less candidates to test, the better.
michaf is offline   Reply With Quote
Old 2007-03-12, 21:02   #3
kuratkull
 
kuratkull's Avatar
 
Mar 2007
Estonia

33·5 Posts
Default

Hmm, nice and simple. Thx :)
kuratkull is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Can you make mew understand the LLR Test? a1call Miscellaneous Math 9 2016-09-20 23:04
I don't understand these relation counts fivemack Msieve 4 2012-10-29 11:26
Don't understand this mfaktc behavior Chuck GPU Computing 2 2011-06-18 17:24
Finally I understand EVERYTHING! Flatlander Lounge 2 2010-10-10 14:30
Don't understand instructions for upgrading to v25 John S Software 22 2008-11-10 21:20

All times are UTC. The time now is 05:21.

Thu Sep 24 05:21:02 UTC 2020 up 14 days, 2:32, 0 users, load averages: 1.55, 1.31, 1.23

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.