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Old 2009-12-08, 20:17   #1
dgould
 

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Default manual results reporting bug for P-1 factoring

I have seen this bug several times; the manual reporting parser appears to not be able to pick up the B1 number.

(Results in the text file):
[Sun Dec 06 08:47:46 2009]
P-1 found a factor in stage #1, B1=600000.
UID: dgould, M51415913 has a factor: 3956827154570882591527327, AID:
19BBEEB4276C4E877A321773EDD2ADB5

(log received back at submission):
Factors found: 1
Processing result: M51415913 has a factor: 3956827154570882591527327, AID: 19BBEEB4276C4E877A321773EDD2ADB5
Insufficient information for accurate CPU credit.
For stats purposes, assuming factor was found using P-1 with B1 = 800000.
CPU credit is 2.4586 GHz-days.
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Old 2009-12-09, 07:15   #2
markr
 
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"Mark"
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Quote:
Originally Posted by dgould View Post
I have seen this bug several times; the manual reporting parser appears to not be able to pick up the B1 number.
It doesn't actually pick up that it's P-1, or whatever type of factoring it was. Only that a factor was found.

This has come up on the forums before, but the posts elude me.

At least when a factor is found in stage 1 it usually gives a bit more credit than is due. If a factor is found in stage 2 it still gives credit as though it was in stage 1... c'est la vie.
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Old 2009-12-09, 08:07   #3
S485122
 
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If you want your real credit do not use the manual pages. Move the prime.spl file from the box with no access to the GIMPS server to a computer that has. The latter computer will report the results for the other. Just make sure you do not overwrite an existing prime.spl file.

Jacob
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Old 2009-12-09, 23:40   #4
alpertron
 
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In my case I'm making several P-1 runs with numbers in the range 253000-254000 using B1=50M and B2=1000M. The first success was at exponent 253367 where the factor 428118424378877527039271 was found on step 1.

The system says that the computer found it by ECM using B1=50000.
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Old 2009-12-11, 03:26   #5
cheesehead
 
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"Richard B. Woods"
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This seems to be the same (or closely related) problem discussed in

http://mersenneforum.org/showthread.php?t=12818

and posts #130-133 in

http://mersenneforum.org/showthread.php?t=11101

Last fiddled with by cheesehead on 2009-12-11 at 03:28
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