Date: Feb 15, 2013 4:58 PM
Author: Louis Talman
Subject: Re: Largest Known Prime Number Discovered

On Fri, 15 Feb 2013 12:17:53 -0700, Joe Niederberger  
<> wrote:

> . Assuming hydrogen atoms for balls, of Bohr radius .53 angstroms, how
> big a device would we need to test
> 2^57,885,161-1 for primality.

The size of the device isn't the limiting factor. It's estimated that
there are roughly 10^82 particles in the universe, so finding enough
hydrogen atoms will be a problem...

- --Louis A. Talman
Department of Mathematical and Computer Sciences
Metropolitan State University of Denver