Re: Mersenne: Old files in my mprime dirs
Brian J. Beesley wrote: > > On Sunday 30 March 2003 21:04, you wrote: > > I've been running mprime on Linux for a bit less than 2 years now. > > I was looking at the directory on one box and found some ancient files: > > mE013037.001 > > mF320219.001 > > > > These are from a dual CPU box. The leading m suggests they're from > > factoring but but file sizes are 3.5 to 3.9 MB. There's been a database > > Very probably P-1 factoring... With a dual CPU box if you're doing P-1 on both CPUs at once you get such a file on the "mprime -B -A1" process. It's just happened to me again. I checked my old prim*.log files and all those exponents were turned in. -- [EMAIL PROTECTED] - HMC UNIX Systems Manager _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: mprime and primenet
*VERY* odd. I sent and recieved this message yesterday, and today I get another copy... - Original Message - From: "John R Pierce" <[EMAIL PROTECTED]> To: "Mersenne discussion list" <[EMAIL PROTECTED]> Sent: Monday, March 31, 2003 11:11 PM Subject: Mersenne: mprime and primenet . I note from the full headers that it was apparently echoed back to the list by a swedish server Received: from franklin.telenor.se (franklin.telenor.se [213.150.135.136]) by acid.base.com (8.11.6/8.11.6) with ESMTP id h31LZBe23829 for <[EMAIL PROTECTED]>; Tue, 1 Apr 2003 13:35:12 -0800 > Received: from maxad.algonet.se (maxad.algonet.se [213.150.135.13]) > by franklin.telenor.se (BMR ErlangTM/OTP 3.1) with ESMTP > id 898847.232749.1049.1s258676franklin for <[EMAIL PROTECTED]> > ; Tue, 01 Apr 2003 23:32:29 +0200 > Received: (qmail 21343 invoked by uid 0); 1 Apr 2003 21:30:35 - > Received: (qmail 2523 invoked from network); 1 Apr 2003 12:12:04 +0200 > Received: from zack.telenor.se (213.150.135.137) > by digitalis.tninet.se with SMTP; 1 Apr 2003 10:12:04 - > Received: from acid.base.com (adsl-63-201-136-251.dsl.snfc21.pacbell.net [63.201.136.251]) > by zack.telenor.se (BMR ErlangTM/OTP 3.1) with ESMTP > id 251014.182787.1049.0s6710305zack for <[EMAIL PROTECTED]> > ; Tue, 01 Apr 2003 09:39:47 +0200 Received: (from [EMAIL PROTECTED]) by acid.base.com (8.11.6/8.11.6) id h317Bwn16753 for mersenne-outgoing-queue42; Mon, 31 Mar 2003 23:11:58 -0800 Received: from hogranch.com ([EMAIL PROTECTED] [66.117.128.240]) by acid.base.com (8.11.6/8.11.6) with ESMTP id h317Bue16749 for <[EMAIL PROTECTED]>; Mon, 31 Mar 2003 23:11:56 -0800 _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: mprime and primenet
On Tuesday 01 April 2003 07:11, John R Pierce wrote: > I just started running a recent build of mprime on a couple of linux > systems, and noted an anomaly vis a vis primenet... > > When mprime connects to primenet, its not updating date on the rest of the > worktodo, only on the exponent actually in progress. > > case in point... > > > 18665107 67 13.6 7.4 67.4 26-Mar-03 12:48 18-Mar-03 17:20 xeon1b > 2790 v19/v20 > 18665149 66 13.6 17.4 74.4 18-Mar-03 17:20 xeon1b > 2790 v19/v20 I guess what's happenning is that mprime checks in a single assignment after completing the P-1 factoring. The default config these days leaves factoring until the assignment reaches the top of the heap. mprime -c only forces connection to server if prime.spl exists (there are unreported results!) or if there is now less work remaining than your specified value. If you want to force updating completion dates, run mprime -m & use the "manual communication" menu (item 12 I think). Regards Brian Beesley _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Anyone like to prove primality of a Mersenne cofactor?
Will Edgington and I try to keep our tables of Mersenne factorizations up to date by synchronizng every week or so. The latest indicated that another Mersenne number had been completely factored. Neither Will nor I have the resources at the moment to prove the 2193-digit cofactor of M(7417) is prime. It's certainly a strong pseudoprime. If anyone would care to complete the proof, please let Will and me know the result. The known prime factors of M(7417) are 118673, 16269026327 and 3888241452787718190543521. Apologies for not crediting the person who found the largest of the three factors given above. I don't know who he or she is. Paul _ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
