mersenneforum.org > Data Let's Optimize P-1 for low exponents. TL;DR in post #1. More in posts 60 and 61.
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2022-08-06, 14:48   #177
petrw1
1976 Toyota Corona years forever!

"Wayne"
Nov 2006

32·7·83 Posts

Quote:
 Originally Posted by congsz When I saw the list of reserved and completed ranges in post #1, I found that, for some completed ranges, there is a number which I guess it means "number of exponents that have been newly factored", while for other completed ranges there isn't. This has made me a little bit upset.
I did not mean to offend anyone; it's just that my OCD tracks every assignment and result I have so I have my counts handy. Unless others tell me their factor found counts I can't add them.
That said, I could get a very close estimate by checking the count differential over a defined time period.
Accepting the fact that the count could not differentiate between TF, P-1, ECM, P+1 factors.
I've done this for a few other COMPLETE ranges.

Last fiddled with by petrw1 on 2022-08-06 at 14:52

2022-08-07, 00:10   #178
congsz

"Cong Shengzhuo"
Sep 2021
Nanjing, China

2516 Posts

Quote:
 Originally Posted by petrw1 I did not mean to offend anyone; it's just that my OCD tracks every assignment and result I have so I have my counts handy. Unless others tell me their factor found counts I can't add them. That said, I could get a very close estimate by checking the count differential over a defined time period. Accepting the fact that the count could not differentiate between TF, P-1, ECM, P+1 factors. I've done this for a few other COMPLETE ranges.
I am sorry for my words. I did not mean to offend anyone either. (Sincere apologies if I misused these emotional words in English, as I rarely speak the language in real life)

Thanks for editing the list on post #1.
For the 8.1M range, I have tracked TF, P-1 and P+1, and found that the 102 exponents newly factored are all done by Flaukrotist via P-1. So the number 102 for 8.1M is totally correct now.

For the 1.0M and 9.9M range, I think I am able to check it manually in a few days, distinguishing all TF, P-1, ECM and P+1 factors, and selecting those which were newly factored by P-1. And I will see if these numbers match.

Last fiddled with by congsz on 2022-08-07 at 00:14

2022-08-07, 10:16   #179
congsz

"Cong Shengzhuo"
Sep 2021
Nanjing, China

37 Posts
9.9M Checked

Quote:
 Originally Posted by congsz For the 1.0M and 9.9M range, I think I am able to check it manually in a few days, distinguishing all TF, P-1, ECM and P+1 factors, and selecting those which were newly factored by P-1. And I will see if these numbers match.
9.9M range checked. 141 exponents newly factored. All of them were factored by P-1 (no ECM or TF or P+1). This number matches the number now shown in post #1.
File can be seen here.

Last fiddled with by congsz on 2022-08-07 at 10:21

2022-08-08, 02:58   #180
petrw1
1976 Toyota Corona years forever!

"Wayne"
Nov 2006

10100011011012 Posts

Quote:
 Originally Posted by congsz 9.9M range checked. 141 exponents newly factored. All of them were factored by P-1 (no ECM or TF or P+1). This number matches the number now shown in post #1. File can be seen here.
I'd like to know your secret for finding this data.

 2022-08-08, 04:13 #181 DrobinsonPE   Aug 2020 3·72 Posts I am less than a week away from finishing the 4.2M range with only 57 exponents left to test. So far I have found 156 factors in this range and hope that I can get another 4 more by the end of the range. I'll let you know the final count this week. I am planning on continuing on up into the 4.3M range so could you please reserve it for me. I finished 3.8M a while back so you can change it to. 3.8 DrobinsonPE --- COMPLETE (64)
2022-08-08, 05:23   #182
congsz

"Cong Shengzhuo"
Sep 2021
Nanjing, China

458 Posts
1.0M Checked, The Number 73 Is Correct

Quote:
 Originally Posted by congsz For the 1.0M and 9.9M range, I think I am able to check it manually in a few days, distinguishing all TF, P-1, ECM and P+1 factors, and selecting those which were newly factored by P-1. And I will see if these numbers match.
1.0M checked. There are 73 exponents newly factored since the release of v30.8. All of them were factored by P-1. This matches the number shown in post #1.
The factoring status in 1.0M is more complicated than that in 9.9M, as factors are found by multiple users. The process can be explained as follows:
Code:
1. Numberwang started P-1'ing in this range from January to March,
with M1011277, M1020751, M1037303, M1046527, M1059209 factored.
But his bounds are too low for the project, roughly B1=100K, B2=2G.

2. axn started P-1'ing from March till June, completing this range with
64 newly factored exponents.

3. Jocelyn factored M1056481 this February.
LordJulius factored M1006237, M1029481, M1009417 this year.
File can be found here.

Quote:
 Originally Posted by petrw1 I'd like to know your secret for finding this data.
To be honest, I don't have any secret for finding this data. What I have done is actually LOTS of manual work. I do my search in the following three steps:
Code:
1. Go to mersenne.ca PrimeNet visualization tool and compare data
between the most recent and last November. I can get a number
(e.g. +73 Factored). Indeed, this number cannot distinguish P-1 from
TF or ECM...

2. Go to mersenne.org Reports->Detailed Reports->Factors Found,
search for new factors found in the range, between last November and
current day. This can get a detailed "Exponent-Factor-Date" chart.
However, this cannot distinguish P-1 from others, either.

3. Copy the chart you get into a .xls file. Manually open the
"Exponent Status" page for EVERY EXPONENT in the chart, and
check ONE BY ONE whether it is a newly-factored exponent or not,
whether it is factored by P-1 or not.
This requires a lot of work, but it can be done within an hour per range. So it is totally acceptable for me to carry it out.

Last fiddled with by congsz on 2022-08-08 at 05:33

 2022-08-09, 04:41 #183 linament   Nov 2013 22×32 Posts I'm almost done with 8.8M; so, sign me up for 8.7M (the one I was working on when the other project finished).
 2022-08-11, 00:43 #184 DrobinsonPE   Aug 2020 3×72 Posts 4.2M is done. Started with 1992 un-factored exponents. By my count, I found 164 factors and it looks like someone else found 1 because the current count stands at 1827. 4.2 DrobinsonPE --- COMPLETE (164) Update on the other ranges: 4.0M is almost 50% done with 50 factors found. 4.3M just starting.
2022-08-11, 04:14   #185
congsz

"Cong Shengzhuo"
Sep 2021
Nanjing, China

37 Posts

Quote:
 Originally Posted by DrobinsonPE 4.2M is done. Started with 1992 un-factored exponents. By my count, I found 164 factors and it looks like someone else found 1 because the current count stands at 1827.
Both my manual count and the mersenne.ca page suggest that you (DRobinsonPE) have factored 165 exponents in the range. Maybe you have miscounted one exponent.
My count shows that
Code:
4.20M 12
4.21M 15
4.22M 17
4.23M 7 (1 composite factor, counted only once)
4.24M 19 (1 composite factor, counted only once)
4.25M 19
4.26M 18
4.27M 15
4.28M 19
4.29M 24 (2 composite factors, counted only once per composite factor)
with 165 in total.

Last fiddled with by congsz on 2022-08-11 at 04:15

2022-08-11, 05:46   #186
DrobinsonPE

Aug 2020

3·72 Posts

Quote:
 Originally Posted by congsz Maybe you have miscounted one exponent.
I went back and checked. My records matched up until today. Turns out that I missed 4299397 this morning. I was busy tonight so when the count was off, I just assumed that someone got lucky with an ECM.

My count for each sub range now matches the results you found so the list in post #1 should be:

4.2 DrobinsonPE --- COMPLETE (165)

 2022-08-12, 22:30 #187 linament   Nov 2013 22×32 Posts 8.8M Complete I think I have completed 8.8M. 155 factors found by P-1 (1955 attempts). Also, 6 factors found via trial factoring with mfaktc (955 attempts).

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