RE: Mersenne: V22.7C Warning
ftp://mersenne.org/gimps/p95v227.zip -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Alun Sent: Thursday, August 01, 2002 9:01 AM To: George Woltman Cc: Terry S. Arnold; [EMAIL PROTECTED] Subject: Re: Mersenne: V22.7C Warning In message <[EMAIL PROTECTED]>, George Woltman <[EMAIL PROTECTED]> writes >At 08:01 PM 7/30/2002 -0700, Terry S. Arnold wrote: >>I am running 22.5.2 on some P4 boxes and 21.4 on a mix of P III and P >>II boxes. What is the best version for each of these box types? > >You are in good shape. P4s should be running version 22.5 or later. >Non-SSE2 machines only need to run version 22 if they want to take >advantage of some of the minor fixes and enhancements now available. > > >_ >Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm >Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers Where do I get 22.5+? -- Alun I read a report that said the typical symptoms of stress were eating too much, drinking too much, impulse buying, and driving too fast. Who are they kidding? That's my idea of a perfect day. _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
RE: Mersenne: Question About Prime Testing Algorithms
> Now my question is this: "How long does an iteration of one of these > probabilistic tests take?" and "Can these tests be used on Mersenne > numbers?" It would seem to be a good way to dispose of even more > Mersenne candidates before submitting them to the lengthy Lucas-Lehmer > algorithm. Why isn't it done? To answer your questions in order: 1) For Mersenne numbers, about the same time it takes to perform a LL-test. 2) Yes. 3) Because the LL-test *proves* primality in about the same time that the pseudoprimality test reports it may be prime (and so needs proving anyway). Paul _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Question About Prime Testing Algorithms
I must start out by saying that I don't have much of a background in the number theory related to prime number testing. I'm just interested in them. That is why I joined GIMPS. I seem to remember reading that there are probabilistic tests that can be run on a number. The test is repeated for a number of iterations. If the test fails any iteration, then it is definitely NOT prime. If it passes a sufficient number of tests, then it is PROBABLY prime. Now my question is this: "How long does an iteration of one of these probabilistic tests take?" and "Can these tests be used on Mersenne numbers?" It would seem to be a good way to dispose of even more Mersenne candidates before submitting them to the lengthy Lucas-Lehmer algorithm. Why isn't it done? Thanks, Gary _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: V22.7C Warning
In message <[EMAIL PROTECTED]>, George Woltman <[EMAIL PROTECTED]> writes >At 08:01 PM 7/30/2002 -0700, Terry S. Arnold wrote: >>I am running 22.5.2 on some P4 boxes and 21.4 on a mix of P III and P >>II boxes. What is the best version for each of these box types? > >You are in good shape. P4s should be running version 22.5 or later. >Non-SSE2 machines only need to run version 22 if they want to take >advantage of some of the minor fixes and enhancements now available. > > >_ >Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm >Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers Where do I get 22.5+? -- Alun I read a report that said the typical symptoms of stress were eating too much, drinking too much, impulse buying, and driving too fast. Who are they kidding? That's my idea of a perfect day. _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Mersenne Prime number search monster
Hi, here you are a link which gives GIMPS some publicity: http://www.theinquirer.net/?article=4728 Regards Guillermo - Guillermo Ballester Valor [EMAIL PROTECTED] Ogijares, Granada SPAIN _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
