mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > PrimeNet

Closed Thread
 
Thread Tools
Old 2004-05-21, 02:47   #1
Mike
 
May 2004
Vancouver, Canada

6416 Posts
Default 0x results...

What happens to the exponents with only "0x" as the LL test result? Are they going to be re-tested?
Mike is offline  
Old 2004-05-21, 03:02   #2
dave_0273
 
dave_0273's Avatar
 
Oct 2003
Australia, Brisbane

47010 Posts
Default

I noticed these strange residues a little while back and mentioned it in the data forum somewhere. However, if you get a list of all exponents with dodgy resiudes, and compare it to lucas_v.txt, they have all already had 2 OTHER sucessful double checks.

I would have looked into it more, but seeing as though they were already exponents that have been sucessfully doublechecked, I didn't really see much point.

I was a couple of months since i checked this last, It is probably time that I checked it again and made sure that any new ones reported do have 2 sucessful double checks.
dave_0273 is offline  
Old 2004-05-21, 03:56   #3
jinydu
 
jinydu's Avatar
 
Dec 2003
Hopefully Near M48

175810 Posts
Default

Why do all residues start with 0x anyway?
jinydu is offline  
Old 2004-05-21, 04:04   #4
justinsane
 
Mar 2004

418 Posts
Default

0x signifies that a number is in hexidecimal
justinsane is offline  
Old 2004-05-21, 13:34   #5
Mike
 
May 2004
Vancouver, Canada

22×52 Posts
Default

Quote:
Originally Posted by dave_0273
I was a couple of months since i checked this last, It is probably time that I checked it again and made sure that any new ones reported do have 2 sucessful double checks.
Yes, I was looking at the cleared.txt list, and noticed that there's 15-20 of them, coming from 2 users primarily. I remember one of them was "Dummy_Results" (Tell you something, eh?).
Mike is offline  
Old 2004-05-22, 02:56   #6
dave_0273
 
dave_0273's Avatar
 
Oct 2003
Australia, Brisbane

2×5×47 Posts
Default

I don't know all the uses for the dummy acount, but one thing that it is used to it trying to trick the server into thinking a result has been submitted for that exponent. Let me try to expain this (and could someone please correct me if I don't get this quite right)

On a very rare occasion, the server assigns an exponent for an LL test when it already has a factor found for that exponent. To try to stop that user from doing a useless LL test, a dummy resisude is submitted to primenet. The server thinks that it has a result, and when the user contacts primenet with the "factored" exponent, the server kicks it out of it worktodo file and gives them another to LL test.

I am pretty sure that this is pretty much how it works, I may be slightly off though.
dave_0273 is offline  
Old 2004-05-22, 12:39   #7
Mike
 
May 2004
Vancouver, Canada

22×52 Posts
Default

If that's the case, then we just need to check the following exponents again:

9046523 64 D 0x 12-Sep-03 13:00 diamonddave finrad.dc
9061981 64 D 0x 13-Sep-03 15:01 diamonddave finrad.dc
9062957 64 D 0x 13-Sep-03 19:10 diamonddave finrad.dc
9096713 64 D 0x 17-Sep-03 04:30 diamonddave finrad.dc
9097853 64 D 0x 17-Sep-03 12:47 diamonddave finrad.dc
9103049 64 D 0x 18-Sep-03 02:55 diamonddave finrad.dc
9105823 64 D 0x 19-Sep-03 00:04 diamonddave finrad.dc
9110279 64 D 0x 20-Sep-03 01:52 diamonddave finrad.dc
9138043 64 D 0x 21-Sep-03 14:02 diamonddave finrad.dc
9139289 64 D 0x 22-Sep-03 02:25 diamonddave finrad.dc
33257209 68 D 0x 08-Sep-03 14:17 Pakka werk


I notice that they're all double checks o.O
Mike is offline  
Old 2004-05-22, 15:45   #8
patrik
 
patrik's Avatar
 
"Patrik Johansson"
Aug 2002
Uppsala, Sweden

1A816 Posts
Default

All of those except the last one have already had two matching double checks. They are in the last lucas_v.txt file. (See the links at the bottom of http://www.mersenne.org/status.htm.) Since 0x doesn't match the other returned residue of 33257209 (in hrf3.txt; but the residue itself is not there), it will be released for a triple check in due time. BTW, the error code of the test in hrf3.txt looks terrible, so it will probably require a quadruple check.
patrik is offline  
Old 2004-05-22, 18:30   #9
tom11784
 
tom11784's Avatar
 
Aug 2003
Upstate NY, USA

2×163 Posts
Default

you say the error code looks horrible - is it my machine?
tom11784/desktop
just curious if it's me - also what is this horrific code?
tom11784 is offline  
Old 2004-05-23, 04:42   #10
dave_0273
 
dave_0273's Avatar
 
Oct 2003
Australia, Brisbane

47010 Posts
Default

The line from hrf3.txt that you want is

33257209,lmurray,933,WY1,00040229

From my post on "data on error codes" in the data forum, I found that no good result has ever been returned with that error code.

The error code 00040229 shows that there were...

29 SUM(IMPUTS) != SUM (OUTPUTS) errors
2 round off > 0.4 errors
4 ILLEGAL SUMOUTS errors
dave_0273 is offline  
Old 2004-05-23, 10:46   #11
tom11784
 
tom11784's Avatar
 
Aug 2003
Upstate NY, USA

2×163 Posts
Default

trust me - my machine had worse
i don't have the hrf3.txt file to pull my machines line from, but it was really bad
tom11784 is offline  
Closed Thread

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Results ET_ Operazione Doppi Mersennes 610 2020-06-09 22:01
gfn results ET_ FermatSearch 8 2019-06-02 12:09
Where have all the TF results gone?... lycorn PrimeNet 22 2017-10-02 02:40
PGS Results danaj Prime Gap Searches 0 2017-08-14 18:35
CPU Results last 24 hrs Unregistered Information & Answers 3 2010-07-26 00:49

All times are UTC. The time now is 22:10.

Sun Jul 5 22:10:18 UTC 2020 up 102 days, 19:43, 0 users, load averages: 1.20, 1.25, 1.27

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.