20220110, 06:06  #12  
"Max"
Jun 2016
Toronto
929 Posts 
Quote:
Greater number of primes doesn't necessarily mean higher score of the circle. Also, below 8300 for the min so far. 

20220110, 07:33  #13 
"Walter S. Gisler"
Sep 2020
Switzerland
F_{16} Posts 
Oops. I had hard coded something for the n=7/d=5 case. After changing this, I am getting the following values:
min: 8265 max: 23209 Anyone else getting those values? 
20220110, 11:17  #14 
Jan 2021
110_{2} Posts 
I avoided posting the scores since this could make people skip exhaustive search to find the solution.

20220110, 13:23  #15  
"Max"
Jun 2016
Toronto
929 Posts 
Quote:
Quote:
Last fiddled with by Max0526 on 20220110 at 13:44 

20220110, 17:11  #16 
"Max"
Jun 2016
Toronto
929_{10} Posts 
Just for the fun of it, anybody wants to try coding n = 9, d = 7 and n = 10, d = 8 cases?

20220111, 12:58  #17  
"Walter S. Gisler"
Sep 2020
Switzerland
3·5 Posts 
Quote:
min: 117390 max: 194304 And with n = 10, d = 8: min: 1747537 max: 1772281 The runtime was about 13000 seconds for the n = 9 case. For the n = 10 case, I used 4 threads, which resulted in a runtime of 12400 seconds. 

20220111, 13:54  #18 
"Max"
Jun 2016
Toronto
929 Posts 
Code:
With n = 9, d = 7 I get the following values: min: 117390 max: 194304 And with n = 10, d = 8: min: 1747537 max: 1772281 I need to rewrite Python into Java to be able to compete with your run times. Will post my results when it's done. Send these min/max results to IBM too. Sometimes they award **. 
20220111, 22:47  #19 
Sep 2017
213_{8} Posts 

20220112, 07:47  #20 
Jan 2021
2·3 Posts 

20220112, 19:27  #21 
"Max"
Jun 2016
Toronto
929 Posts 
Both are available as of this morning.
Last fiddled with by Max0526 on 20220112 at 19:27 
20220117, 14:09  #22 
Jun 2016
34_{8} Posts 
I get the same answers for n = 9, d = 7 and n = 10, d = 8. It is possible to do it with a lot less computation  my single threaded C++ code took about 3.5s for n = 9, d = 7 and about 32s for n = 10, d = 8. Almost all of the time for n = 10 (like 31.9s) was spent generating a list of 8 digit primes.

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