[Haskell-cafe] Elementary math question: primality test for huge numbers

Patrick Chilton chpatrick at gmail.com
Mon Aug 24 10:52:30 UTC 2015


Haskell also includes the primality testing functions of the GMP library on
Integers, but they're MagicHashed for some reason so handle with care:

https://hackage.haskell.org/package/integer-gmp-1.0.0.0/docs/GHC-Integer-GMP-Internals.html#g:12

On Mon, Aug 24, 2015 at 6:38 AM, William Yager <will.yager at gmail.com> wrote:

> See section 4.4. http://cacr.uwaterloo.ca/hac/about/chap4.pdf
>
> --Will Yager
>
> On Mon, Aug 24, 2015 at 12:34 AM, Christopher Howard <ch.howard at zoho.com>
> wrote:
>
>> Hi. I was working through a math chapter explaining the RSA algorithm,
>> and I was implementing it in Haskell for learning sake. However, the
>> chapter does not explain how you efficiently pick the two prime
>> numbers. I scanned through the WP page on primality tests but it was
>> somewhat overwhelming. What would be the standard primality test for
>> this sort of application, and is it already built in to Base somewhere?
>>
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