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Old 2021-11-22, 15:13   #705
kriesel
 
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Quote:
Originally Posted by SethTro View Post
change the exponent(A vs B) the probability of finding a factor changes slightly which I don't believe it should.
I believe it must change the factor finding probability to change the exponent. f=2kp+1. For larger p, fewer potential factors fit in the bounds. That's the broader trend. For small delta p, smoothness of Mp will fluctuate. A lot. Consider this small sample. For code that optimizes time probably saved, the primality test cost is considered. That cost is not a smooth function with continuous second derivative. There are steps in the cost per iteration, at transitions between fft length, both for primality testing, and for computing P-1 stages. And in some software the exponent at which the transition occurs, differs between primality testing and P-1. Prime95 (George) found a factor of 3 sometimes occurring, in P-1, which affects where the transitions are set.

Last fiddled with by kriesel on 2021-11-22 at 15:18
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Old 2021-11-23, 12:21   #706
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Thanks James for the quick answer about the P-1 probability calculator.

New questions

1. For credit.php there's code in https://www.mersenneforum.org/showthread.php?t=10937 but it doesn't seem to include the fft_timing data. Would it be possible to share that data? Does it belong to the unfinished throughput.php page?

2. Are the current PM1 bounds available for bulk download? They don't seem to be a part of the export page
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Old 2021-11-23, 12:37   #707
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Quote:
Originally Posted by SethTro View Post
...but it doesn't seem to include the fft_timing data. Would it be possible to share that data?
I have attached the PHP code that contains most of the lookup tables and credit formulas.

Quote:
Originally Posted by SethTro View Post
Are the current PM1 bounds available for bulk download? They don't seem to be a part of the export page
I'll look into that and make them available in the near future.
Attached Files
File Type: txt cpucredit.php.txt (33.6 KB, 27 views)
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Old 2021-11-24, 20:15   #708
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On recent results (as of 20:00 today)
Code:
Luminescence	Manual testing	27288977	F-PM1	2021-11-24 19:27	0.0	10.1319	Factor: 444000952104899497509484343002270742095987970511887 / (P-1, B1=3000000, B2=90000000)
Luminescence	Manual testing	27288977	F-PM1	2021-11-24 19:27	1.7	10.1319	Factor: 444000952104899497509484343002270742095987970511887 / (P-1, B1=3000000, B2=90000000)
P.S. It shows twice because it was turned in as 1 factor then split into 2.

However these do NOT show up on recent cleared.
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Old 2021-11-24, 22:16   #709
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Quote:
Originally Posted by petrw1 View Post
On recent results (as of 20:00 today)
Code:
Luminescence	Manual testing	27288977	F-PM1	2021-11-24 19:27	0.0	10.1319	Factor: 444000952104899497509484343002270742095987970511887 / (P-1, B1=3000000, B2=90000000)
Luminescence	Manual testing	27288977	F-PM1	2021-11-24 19:27	1.7	10.1319	Factor: 444000952104899497509484343002270742095987970511887 / (P-1, B1=3000000, B2=90000000)
P.S. It shows twice because it was turned in as 1 factor then split into 2.

However these do NOT show up on recent cleared.
https://www.mersenne.ca/exponent/27288977

Also, for some reason, only one of the factors was imported to the mersenne.ca page.
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Old 2021-11-24, 22:18   #710
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The factor links report failure #6

https://www.mersenne.ca/factor/45909...68027149153663
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Old 2021-11-24, 23:21   #711
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Quote:
Originally Posted by petrw1 View Post
However these do NOT show up on recent cleared.
Which "recent cleared" page is this? Please quote me a URL, I often forget tools and reports I've added to my own site...

Quote:
Originally Posted by Viliam Furik View Post
https://www.mersenne.ca/exponent/27288977
Also, for some reason, only one of the factors was imported to the mersenne.ca page.
Both factors show up on the exponent page (try Ctrl-F5 to force a refresh if you only see one?).

Quote:
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That was my fault and is fixed now.
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Old 2021-11-24, 23:40   #712
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Quote:
Originally Posted by SethTro View Post
Are the current PM1 bounds available for bulk download? They don't seem to be a part of the export page
They are now. There's a new row near the bottom of the page for "Exponent Limits" which is a plaintext report, one exponent per line, which includes these columns (all data tab-separated):
Code:
exponent	factored	tfnf	b1	b2	pm1_prob
"factored" will be 1 if there are known factor(s) (but not how many, unfortunately) and 0 if none known
"tfnf" is how far this exponent has been fully TF'd (fully complete bitlevels, not stopping after finding a factor)
"b1","b2" are the best P-1 bounds (by probability) run on this exponent. Will be blank if no P-1.
"pm1_prob" is % probability of factor for best P-1 run, if applicable. Note that this probability is calculated based on Prime95-default TF levels for the exponent, not the actual TF level the exponent has had run, to provide an even basis of comparison (higher TF means lower P-1 probability).

Hope that's useful.
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Old 2021-11-25, 03:30   #713
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Quote:
Originally Posted by James Heinrich View Post
Which "recent cleared" page is this? Please quote me a URL, I often forget tools and reports I've added to my own site...

Both factors show up on the exponent page (try Ctrl-F5 to force a refresh if you only see one?).

That was my fault and is fixed now.
https://www.mersenne.org/report_recent_results/
https://www.mersenne.org/report_recent_cleared/
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Old 2021-11-25, 03:55   #714
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Note that those are mersenne.org URLs and this is a mersenne.ca thread.
I have no control over the generation of those reports.
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Old 2021-11-25, 04:35   #715
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Quote:
Originally Posted by James Heinrich View Post
Both factors show up on the exponent page (try Ctrl-F5 to force a refresh if you only see one?).
Now they do. But at the time of writing my post, there was only the bigger one. Sadly, I didn't make a screenshot.
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