17744Re: [PrimeNumbers] Re: symmetrical primes
- Mar 12, 2006--- Alan McFarlane <alan.mcfarlane@...> wrote:
> Hmm, I noticed that...Confirmed. (2^40, rather than 10^12)
> I have, however, successfully completed an exhaustive search up to 10^12
> and not found any occurences of 20 primes in symetrical sequence.
Quoth a 2GHz Athlon (sharing with a nice PIES process):
bash-3.1$ time ./symprimeven
> I'll keep it running for a while, but I may have to resort to running itI think it is worth trying to find such a cluster, and also that it's not worth
> on my farm for a week or so :)
competing, and definitely worth cooperating. So you have dibbs on the task (if
you have a farm, that only makes sense -- I only have a herb garden!). If my
code's faster than yours, you can have it freely. However, as I hinted, my
code's not very clever.
I was thinking of a branchless FSM-like approach optimisation, but decided to
not bother in the end. However, if you want to try to work on optimising the
task, I can join you in a brainstorm.
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