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-   -   A Prime Sequence (https://www.mersenneforum.org/showthread.php?t=11081)

Jens K Andersen 2008-12-07 08:25

15-bad: 16434786721

Jens K Andersen 2008-12-08 04:43

16-bad: 51321114983
I stopped the search there.

CRGreathouse 2008-12-08 15:24

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

davar55 2008-12-11 14:38

[quote=CRGreathouse;152482]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[/quote]

Is this something that should be submitted to OEIS?

CRGreathouse 2008-12-11 15:56

[QUOTE=davar55;152900]Is this something that should be submitted to OEIS?[/QUOTE]

I didn't think so, but if you'd like to the format's all ready to go. :smile:

I'm trying for 17, but that hasn't gone anywhere yet. I won't have the patience or processing power to do 18.

davar55 2009-07-02 19:58

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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