Re: Finding a relative prime

• To: mathgroup at smc.vnet.net
• Subject: [mg19704] Re: Finding a relative prime
• From: "Shazam" <gmon at toad.net>
• Date: Sat, 11 Sep 1999 16:36:08 -0400
• References: <7r7kal\$ckp@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```Can't you just pick any random prime q between 2 and p-1 and then q and p-1
are automatically relatively prime?  Or do you need to consider any
relatively prime number as potential numbers to pick?

I think I would know how to do the above but I would have to look it up
(last semester I took a cryptography course and we did things like
that).....

If you can't figure it out then let me know and I'll look it up.......

Timur Tabi <nospam_timur at tabi.org> wrote in message
news:7r7kal\$ckp at smc.vnet.net...
> I'm using Mathematica 3.0 for the Mac, and I'm trying to figure out how
> to get it to pick a random number that is relatively prime to another
> number, p-1, where p is prime.  In other words, pick a random number k
> such that 1) k is between 2 and p-1, and 2) k is relatively prime to p-1.
> How can I do that in Mathematica 3.0?
>
> --
> Timur "too sexy for my code" Tabi, timur at tabi.org
>
>
> Sent via Deja.com http://www.deja.com/
> Share what you know. Learn what you don't.
>

```

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