mersenneforum.org Hi, how can I test my probable prime number?
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 2014-05-08, 06:24 #1 mohdosa   May 2014 1 Posts Hi, how can I test my probable prime number? Hi, how can I test my probable prime number? Thanks..
 2014-05-08, 11:54 #2 kladner     "Kieren" Jul 2011 In My Own Galaxy! 2×3×1,693 Posts GO FOR IT! Run Prime95 on it. Since you see a probability of its being prime, don't bother with Trial Factoring or P-1 Factoring. However, unless you are actually Curtis Cooper incognito, there is probable disappointment in your future. Good Luck!
 2014-05-08, 12:05 #3 LaurV Romulan Interpreter     "name field" Jun 2011 Thailand 100110010100002 Posts how big? test it for what? Last fiddled with by LaurV on 2014-05-08 at 12:06
 2014-05-08, 12:06 #4 Mini-Geek Account Deleted     "Tim Sorbera" Aug 2006 San Antonio, TX USA 2×5×7×61 Posts We'll need more information to help you and tell you if it's even feasible (with hardware available today). How large is it? What form is it? (e.g. 2^p-1, n!-1, 2^n+b, etc.; you don't have to tell us the exact number if you don't want to, but at least give us an idea of the scale of the number(s) involved) (some numbers with special forms have fast tests, like the LL for Mersenne numbers, while others require a more difficult algorithm, ECPP, that can be run on a number of general form) If the factorization of N-1 or N+1 (where your number is N) is known, you can run a fast test. Possibilities include Prime95, PFGW, and Primo (ECPP). (I'm assuming you're saying that you have a number that has already passed a PRP, probable prime, test, and you want to know how to prove it prime) Last fiddled with by Mini-Geek on 2014-05-08 at 12:10
 2014-05-08, 17:09 #5 science_man_88     "Forget I exist" Jul 2009 Dumbassville 26×131 Posts though nothing else was revealed: http://mersenneforum.org/showpost.ph...37&postcount=4
2014-05-10, 22:14   #6
gd_barnes

May 2007
Kansas; USA

33·17·23 Posts

Quote:
 Originally Posted by science_man_88 though nothing else was revealed: http://mersenneforum.org/showpost.ph...37&postcount=4
bad link

 2014-05-12, 15:29 #7 BudgieJane     "Jane Sullivan" Jan 2011 Beckenham, UK 27910 Posts What is the point of asking a question here, if you are going to ignore all the follow-up posts?
2014-05-12, 15:40   #8
henryzz
Just call me Henry

"David"
Sep 2007
Cambridge (GMT/BST)

173216 Posts

Quote:
 Originally Posted by BudgieJane What is the point of asking a question here, if you are going to ignore all the follow-up posts?
A bot posting?

2014-05-12, 15:41   #9
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

2·23·137 Posts

Quote:
 Originally Posted by BudgieJane What is the point of asking a question here, if you are going to ignore all the follow-up posts?
How do you know the OP ignored the replies? Perhaps the OP read them/is reading them now and is taking notice, or waiting for what he/she considers a sensible response?

2014-05-12, 17:20   #10
R.D. Silverman

Nov 2003

22·5·373 Posts

Quote:
 Originally Posted by retina How do you know the OP ignored the replies? Perhaps the OP read them/is reading them now and is taking notice, or waiting for what he/she considers a sensible response?
Or he/she did not understand what he/she was asking and does not
understand the replies.

2014-05-12, 17:28   #11
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

11000100111102 Posts

Quote:
 Originally Posted by R.D. Silverman Or he/she did not understand what he/she was asking and does not understand the replies.
Yes, perhaps. Often people post to several boards at the same time. They get belittled on one board, ignored on a second board, and nanny coddled on a third. It doesn't take a genius to guess which board they direct their attention to.

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