Primality searches and primality successes

marco_calabresi · 2009-04-17, 17:26

Hello,

should I jump up and down in happiness? Probably not. However I just wanted to check. Prime95 told me that M31 is a prime. How does this contribute to the search? Did I by any chance hit on an important prime.

Thank you for your help.

Below is a screenshot of my finding (it is small in the Worker 1 window).

http://i96.photobucket.com/albums/l1...009_185827.jpg

Thank you for your help
A rookie prime searcher.

Marco

jrk · 2009-04-17, 17:38

Did you ask prime95 to test this number manually?

2^31-1 = 2147483647 was first proven to be prime by Euler in 1772.

10metreh · 2009-04-17, 18:07

It appears you have two current GIMPS-range numbers being tested, so I assume you received them from Primenet. So how did the "M31" get involved?

I also remember this.

marco_calabresi · 2009-04-17, 19:44

Either I got the strange error which was pointed out to me or inadvertently asked to search M31. This is possible since I had a Prime95 crash just before and was trying to understand why.

Thank you for your patience!
M

2009-04-17, 17:26	#1
marco_calabresi Apr 2009 Spain 10₂ Posts	Primality searches and primality successes Hello, should I jump up and down in happiness? Probably not. However I just wanted to check. Prime95 told me that M31 is a prime. How does this contribute to the search? Did I by any chance hit on an important prime. Thank you for your help. Below is a screenshot of my finding (it is small in the Worker 1 window). http://i96.photobucket.com/albums/l1...009_185827.jpg Thank you for your help A rookie prime searcher. Marco

2009-04-17, 19:44	#4
marco_calabresi Apr 2009 Spain 2 Posts	fool of myself! Either I got the strange error which was pointed out to me or inadvertently asked to search M31. This is possible since I had a Prime95 crash just before and was trying to understand why. Thank you for your patience! M

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Primality proving	CRGreathouse	Software	13	2011-01-30 14:30
primality of F33	TimSorbet	Math	8	2009-09-24 21:18
primality of ((p+1)^p-1)/p^2	maxal	Math	23	2008-03-09 21:09
Primality	Unregistered	Homework Help	4	2007-07-18 08:36
N-1 primality test	Citrix	Math	3	2005-09-19 15:06

2009-04-17, 17:38	#2
jrk May 2008 3×5×73 Posts	Did you ask prime95 to test this number manually? 2^31-1 = 2147483647 was first proven to be prime by Euler in 1772.

2009-04-17, 18:07	#3
10metreh Nov 2008 2·3³·43 Posts	It appears you have two current GIMPS-range numbers being tested, so I assume you received them from Primenet. So how did the "M31" get involved? I also remember this.