Mersenne Digest Sunday, September 2 2001 Volume 01 : Number 879 ---------------------------------------------------------------------- Date: Thu, 30 Aug 2001 08:36:28 -0400 From: George Woltman Subject: Mersenne: M727 factored! >M727, the smallest Mersenne number with no known factor, is done. >(It was clearly out of reach of ecm.) > >------- Start of forwarded message ------- >From: Peter-Lawrence.Montgomery >Date: Thu, 30 Aug 2001 03:26:19 GMT > >C(2,727-) >* c219 = prp98.prp128. SNFS Dodson/AKL/CWI >* Penultimate prime champion >* Runner-up for SNFS difficulty > >17606291711815434037934881872331611670777491166445300472749449436575622328171096762265466521858927 > >40099499726183758517891939428601665707063794593443940689888526556802581529262728143398959743444150539520890742947533452401 >------- End of forwarded message ------- _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 10:05:05 -0400 From: "Ethan O'Connor" Subject: RE: Mersenne: New v21 beta George, This is a little strange, but the installer fails to run under Windows XP (final)... I get two error messages from the Side by Side service (which controls the concurrent installation of multiple versions of .dlls in the system directory): "Syntax error in manifest or policy file "C:\Documents and Settings\eoconnor\Desktop\p95v21.exe" on line 1" "Generate Activation Context failed for C:\Documents and Settings\eoconnor\Desktop\p95v21.exe. Reference error message: The operation completed successfully." Getting the .zip and manually doing things works fine, and prime95 itself runs without problems. I have no idea what's up with the installer. I'll try to do some digging into the SxS stuff later today. - -Ethan O'Connor ethanoconnor@hotmail.com - -----Original Message----- From: George Woltman [mailto:woltman@alum.mit.edu] Sent: Wednesday, August 29, 2001 10:53 PM To: Mersenne@base.com Subject: Mersenne: New v21 beta Hi all, The world's longest beta test continues..... New beta of prime95 is at http://www.mersenne.org/freesoft.htm Linux and NT service version has not been updated yet. This release has a new menu choice ... Options/Benchmark. The page http://www.mersenne.org/bench.htm has been stripped of all version 20 benchmarks for Celeron 2, Pentium 3, and Athlon processors. I need version 21 benchmarks for these CPUs to help me populate the new benchmarks page. Thanks! George P.S. Sorry for the long beta period, I haven't had a lot of free time lately. _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ********************************************************************** This email, and any files transmitted with it, are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please advise itmail@vci.com. ********************************************************************** _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 12:55:58 -0400 From: George Woltman Subject: RE: Mersenne: New v21 beta Hi Ethan, At 10:05 AM 8/30/2001 -0400, Ethan O'Connor wrote: >This is a little strange, but the installer fails to run under Windows XP I just went to ghost installer's web site. They have a new version that supposedly corrects some XP issues. I've rebuilt the setup program and uploaded it - give it a try. BTW, I give Ghost Installer very high marks for features and ease-of-use. Furthermore, free is a pretty good price! Highly recommended. Regards, George _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 13:14:55 -0400 From: "Ethan O'Connor" Subject: RE: Mersenne: New v21 beta George, That did the trick! No problems with the installer or the application now. - -Ethan - -----Original Message----- From: George Woltman [mailto:woltman@alum.mit.edu] Sent: Thursday, August 30, 2001 12:56 PM To: Ethan O'Connor; Mersenne@base.com Subject: RE: Mersenne: New v21 beta Hi Ethan, At 10:05 AM 8/30/2001 -0400, Ethan O'Connor wrote: >This is a little strange, but the installer fails to run under Windows XP I just went to ghost installer's web site. They have a new version that supposedly corrects some XP issues. I've rebuilt the setup program and uploaded it - give it a try. BTW, I give Ghost Installer very high marks for features and ease-of-use. Furthermore, free is a pretty good price! Highly recommended. Regards, George ********************************************************************** This email, and any files transmitted with it, are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please advise itmail@vci.com. ********************************************************************** _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 20:38:36 +0200 From: =?Windows-1252?Q?Ignacio_Larrosa_Ca=F1estro?= Subject: Mersenne: Windos XP: Start at Bootup This option seems no work on WindowsXP in one of my computers, the only one with WindowsXP. Is it so, or there is a problem with my system? Best regards, Ignacio Larrosa Caņestro A Coruņa (Espaņa) ignacio.larrosa@eresmas.net ICQ #94732648 _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 12:03:12 -0700 From: Eric Hahn Subject: Re: Mersenne: M727 factored! George Woltman wrote: >>M727, the smallest Mersenne number with no known factor, is done. >>(It was clearly out of reach of ecm.) >> >>------- Start of forwarded message ------- >>From: Peter-Lawrence.Montgomery >>Date: Thu, 30 Aug 2001 03:26:19 GMT >> >>C(2,727-) >>* c219 = prp98.prp128. SNFS Dodson/AKL/CWI >>* Penultimate prime champion >>* Runner-up for SNFS difficulty >> >>17606291711815434037934881872331611670777491166445300472749449436575622328 171096762265466521858927 >> >>40099499726183758517891939428601665707063794593443940689888526556802581529 262728143398959743444150539520890742947533452401 >>------- End of forwarded message ------- This result does not surprise ME in the least... Anybody on the list that saw my post back in July of last year... knows that from the statistcal anaylsis that was done at that time... I posted the following for M727: M727 - 94.3716% probability - 2 factors M727 - 52.8693% probability - 3 factors M727 - 6.0014% probability - 4+ factors M727 - 91.1834% probability - 313-bit min. factor size M727 - 93.0447% probability - 428-bit max. factor size M727 - 21.7336% probability - highly composite factors Now we know that M727 has 2 factors... and the factors are 326 and 426 bits in length, respectively... Preliminary testing also shows that ( factor - 1 ) is NOT highly composite (having many, many factors)... Would anybody care to verify the data I posted back then for M751 ???? M751 - 83.8467% probability - 2 factors M751 - 74.2974% probability - 3 factors M751 - 19.5801% probability - 4+ factors M751 - 87.2999% probability - 281-bit min. factor size M751 - 81.0003% probability - 526-bit max. factor size M751 - 30.1716% probability - highly composite factors Eric _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 16:02:51 -0400 From: Nathan Russell Subject: Re: Mersenne: Windos XP: Start at Bootup On Thu, 30 Aug 2001 20:38:36 +0200, Ignacio Larrosa Caņestro wrote: (I'm ccing this to the list so Ignacio doesn't get large amounts of redundant mail) >This option seems no work on WindowsXP in one of my computers, the only >one with WindowsXP. Is it so, or there is a problem with my system? Have you tried upgrading to the new copy that George mentioned this afternoon? I don't run XP, so I'm afraid I can't vouch for it... Nathan _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 30 Aug 2001 20:46:47 -0400 From: George Woltman Subject: Mersenne: Re: Windows XP: Start at Bootup Hi all, At 08:38 PM 8/30/2001 +0200, Ignacio Larrosa Caņestro wrote: >This option seems no work on WindowsXP in one of my computers, the only >one with WindowsXP. Is it so, or there is a problem with my system? I don't have Windows XP. Are other XP users having trouble with the new "Start at bootup" menu choice? Are NT/2000 users having trouble? Windows 95/98/Me users should be OK because this is the old "Windows 95 Service" menu choice. It used to be greyed out for NT systems. I renamed the menu choice and tried to make it work reasonably well for NT/2000/XP users as well. - -- George _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 31 Aug 2001 11:03:36 -0400 From: "Ethan O'Connor" Subject: RE: Mersenne: Re: Windows XP: Start at Bootup The "Start at bootup" menu choice works fine for me on XP. Could this be a privileges issue? I notice that the registry key is in Run under HKEY_LOCAL_MACHINE rather than HKEY_CURRENT_USER, so I think you'll to be running prime95 with administrative privileges to create that key... - -Ethan O'Connor - -----Original Message----- From: George Woltman [mailto:woltman@alum.mit.edu] Sent: Thursday, August 30, 2001 8:47 PM To: Ignacio Larrosa Caņestro; Mersenne@base.com Subject: Mersenne: Re: Windows XP: Start at Bootup Hi all, At 08:38 PM 8/30/2001 +0200, Ignacio Larrosa Caņestro wrote: >This option seems no work on WindowsXP in one of my computers, the only >one with WindowsXP. Is it so, or there is a problem with my system? I don't have Windows XP. Are other XP users having trouble with the new "Start at bootup" menu choice? Are NT/2000 users having trouble? Windows 95/98/Me users should be OK because this is the old "Windows 95 Service" menu choice. It used to be greyed out for NT systems. I renamed the menu choice and tried to make it work reasonably well for NT/2000/XP users as well. - -- George _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ********************************************************************** This email, and any files transmitted with it, are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please advise itmail@vci.com. ********************************************************************** _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 31 Aug 2001 11:57:49 -0400 From: George Woltman Subject: RE: Mersenne: Re: Windows XP: Start at Bootup Hi, At 11:03 AM 8/31/2001 -0400, Ethan O'Connor wrote: >The "Start at bootup" menu choice works fine for me on XP. Could this be a >privileges issue? I notice that the registry key is in Run under >HKEY_LOCAL_MACHINE rather than HKEY_CURRENT_USER, so I think you'll to be >running prime95 with administrative privileges to create that key... My response: >Prime95 tries to create the HKEY_LOCAL_MACHINE entry first. If that fails, >then it tries to create the HKEY_CURRENT_USER entry. Perhaps there is a bug in this new code, but I cannot test it out here. Any insights would be appreciated. Also, I noticed in browsing Microsoft's web site that XP allows different users to logon at the same time. Does this cause any problems if both users try to run prime95 from the same folder? I don't think so, but an actual test would be nice. Thanks, George _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 31 Aug 2001 12:34:27 -0400 From: Bruce A Metcalf Subject: Re: Mersenne: New v21 beta At 10:52 PM 29-08-01 -0400, George wrote: >The world's longest beta test continues..... New beta of prime95 is at >http://www.mersenne.org/freesoft.htm Great! Now, if you could please tell me the filename? All I could find was p95v21a.zip, which is the previous beta version ... isn't it? Please forgive if I'm being dense again. Bruce A. Metcalf mailto:bmetcalf@magicnet.net http://myweb.magicnet.net/bmetcalf _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Fri, 31 Aug 2001 13:48:20 -0700 From: "Aaron Blosser" Subject: Re: Mersenne: Re: Windows XP: Start at Bootup So far as I know, the Run under HKLM will only run at system startup, so there's no risk of multiple instances there... but I'm not 100% sure if it runs right away, or if it waits until a user actually logs on... I think it might not run until there's a logon. If different users on a machine had an entry in HKCU for the Run, well, it would run under that user's context and then quit when they logout. No biggie, but if you had a terminal server with multiple users logged on at once, I guess you could get multiple instances running. Also, if it was set in the HKLM *and* in HKCU, you could get multiple instances... I know multiple instances of the program are allowed, for use in multi-processor system, but maybe there's some way to figure out if it's already running in that same directory, with the same ini files? just to prevent problems with two instances trying to use the same temp files and causing havoc, slowing the LL tests down, etc... dunno much about how that would be programmed. If running Prime95 (and not the NTPrime) as a service is what's trying to be done, then the SRVANY program from the resource kit can do that, but including that with the Prime package might not be legal, and would increase the size too, but it could certainly be "scripted" in any installer program (pretty easy to setup). - ----- Original Message ----- From: "George Woltman" To: "Ethan O'Connor" ; Sent: Friday, August 31, 2001 8:57 AM Subject: RE: Mersenne: Re: Windows XP: Start at Bootup > Hi, > > At 11:03 AM 8/31/2001 -0400, Ethan O'Connor wrote: > >The "Start at bootup" menu choice works fine for me on XP. Could this be a > >privileges issue? I notice that the registry key is in Run under > >HKEY_LOCAL_MACHINE rather than HKEY_CURRENT_USER, so I think you'll to be > >running prime95 with administrative privileges to create that key... > > My response: > > >Prime95 tries to create the HKEY_LOCAL_MACHINE entry first. If that fails, > >then it tries to create the HKEY_CURRENT_USER entry. Perhaps there is a > bug in this new code, but I cannot test it out here. > > Any insights would be appreciated. > > Also, I noticed in browsing Microsoft's web site that XP allows different > users to > logon at the same time. Does this cause any problems if both users try to run > prime95 from the same folder? I don't think so, but an actual test would > be nice. > > Thanks, > George _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Mon, 03 Sep 2001 03:19:12 +1100 From: Bill Watson Subject: Re: Mersenne: M727 factored! Eric Hahn wrote: > M727 - 94.3716% probability - 2 factors > M727 - 52.8693% probability - 3 factors > M727 - 6.0014% probability - 4+ factors > M727 - 91.1834% probability - 313-bit min. factor size > M727 - 93.0447% probability - 428-bit max. factor size > M727 - 21.7336% probability - highly composite factors > M751 - 83.8467% probability - 2 factors > M751 - 74.2974% probability - 3 factors > M751 - 19.5801% probability - 4+ factors > M751 - 87.2999% probability - 281-bit min. factor size > M751 - 81.0003% probability - 526-bit max. factor size > M751 - 30.1716% probability - highly composite factors Eric, I was wondering what variables are the basis for these statistics, and whether they can be used to investigate whether a particular Mersenne number is likely to be prime? cheers, Bill. _________________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ End of Mersenne Digest V1 #879 ******************************