[seqfan] Re: Software for searching for Wolstenholme primes?

Hans Havermann gladhobo at teksavvy.com
Mon Nov 19 12:56:32 CET 2012


Georgi Guninski:

> Hmmm, according to the internet the search for Wolstenholme primes  
> is only up to 10^9.

After your initial post, I naively tried to verify (in Mathematica)  
the primes to this limit. It took a two-year-old machine 4.2 hours to  
get to the second Wolstenholme prime (2124679). I realized then that I  
wasn't going to achieve that goal and that it was for a similar reason  
(the difficulty of fast-computing the binomial) that researchers with  
better means hadn't progressed beyond 10^9.


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