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Old 2007-06-17, 05:30   #1
Citrix
 
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Default Citrix' revision to srsieve

I rewrote sr5sieve using the idea mentioned in PSP project forum and I found 3 factors. time per factor = 240 sec.

Is this of any use to anyone?

8002393997041 | 99926*5^1786093+1
8004199695841 | 66916*5^1544589-1
8009635921921 | 92936*5^1315448-1

Machine used = celeron 1.4 ghz RAM=512 Mb L1=32 L2=1024

Last fiddled with by Citrix on 2007-06-17 at 05:32
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Old 2007-06-17, 15:29   #2
masser
 
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Hi Citrix,

Thanks for the heads up - I uploaded the factors on our factor submission webpage; the factors appear to be new. Can you give us a link to the source? I saw some discussion at the PSP forum, but no mention of working code. Can you give us a brief overview of this software?

regards,
masser

Last fiddled with by masser on 2007-06-17 at 15:29
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Old 2007-06-17, 17:03   #3
Citrix
 
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It is here in this thread.
http://www.mersenneforum.org/showthread.php?t=8149

I just modified the 'y' version so it works for base 5. Geoff will be able to compile it better and reduce the time further.

I used y=720.

Last fiddled with by Citrix on 2007-06-17 at 17:06
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Old 2007-06-18, 01:13   #4
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Instead of y it should be the x version in the previous post.

8012602963259 | 62698*5^101386+1
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Old 2007-06-23, 19:24   #5
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Does someone have a working version for SR5sieve "x version" (amd or intel, i don't care). or even a SR1sieve "x version".?
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Old 2007-06-24, 01:30   #6
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Quote:
Originally Posted by tnerual View Post
Does someone have a working version for SR5sieve "x version" (amd or intel, i don't care). or even a SR1sieve "x version".?
sr2sieve (including the -x version) can sieve in any base, you just need to rename the work file to sr2work.txt and the input file to sr2data.txt, or else specify input with the -i switch and specify the sieve range with the -p and -P switches.
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