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Old 2008-12-07, 08:25   #12
Jens K Andersen
 
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15-bad: 16434786721
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Old 2008-12-08, 04:43   #13
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16-bad: 51321114983
I stopped the search there.
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Old 2008-12-08, 15:24   #14
CRGreathouse
 
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So here are the minimal k-bad primes for k in 1..16, in Sloane b-file format:

1 5
2 47
3 389
4 449
5 26627
6 47681
7 237343
8 1108337
9 2875111
10 9189181
11 12180187
12 208564813
13 1746334757
14 3170297129
15 16434786721
16 51321114983
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Old 2008-12-11, 14:38   #15
davar55
 
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Quote:
Originally Posted by CRGreathouse View Post
So here are the minimal k-bad primes for k in 1..16, in Sloane b-file format:

1 5
2 47
3 389
4 449
5 26627
6 47681
7 237343
8 1108337
9 2875111
10 9189181
11 12180187
12 208564813
13 1746334757
14 3170297129
15 16434786721
16 51321114983
Is this something that should be submitted to OEIS?
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Old 2008-12-11, 15:56   #16
CRGreathouse
 
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Quote:
Originally Posted by davar55 View Post
Is this something that should be submitted to OEIS?
I didn't think so, but if you'd like to the format's all ready to go.

I'm trying for 17, but that hasn't gone anywhere yet. I won't have the patience or processing power to do 18.
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Old 2009-07-02, 19:58   #17
davar55
 
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Have you tried, not a sieve, or a multi-core processor,
but strictly two processors running in parallel
and exchanging data and information ala by the internet?
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