Re: Where can I find maximum primes < 2^n

From	Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups	comp.programming
Subject	Re: Where can I find maximum primes < 2^n
Date	2019-05-15 23:23 +0100
Organization	A noiseless patient Spider
Message-ID	<87y337jr0r.fsf@bsb.me.uk> (permalink)
References	<qbgm2j$h9$1@news.albasani.net>

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Bonita Montero <Bonita.Montero@gmail.com> writes:

> I need the largest prime that fits in a unsigned 64 bit integeger
> to  build hash-keys. Can anyone tell me a source for such primes
> in the net?

That's been answered, but there are also many programs that can tell
you.  For example, it's common for computer maths programs to have next
and previous prime functions.  For example, GP/PARI reports

? precprime(2^64 - 1)
%1 = 18446744073709551557

as does Maxima.

-- 
Ben.

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Where can I find maximum primes < 2^n Bonita Montero <Bonita.Montero@gmail.com> - 2019-05-15 11:27 +0200
  Re: Where can I find maximum primes < 2^n David Brown <david.brown@hesbynett.no> - 2019-05-15 14:03 +0200
  Re: Where can I find maximum primes < 2^n Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-05-15 23:23 +0100

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