Primality proof for n = 327923:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=397.html>397 is prime.</a>
<br>b^((n-1)/397)-1 mod n = 37889, which is a unit, inverse 316464.
<p><a href=59.html>59 is prime.</a>
<br>b^((n-1)/59)-1 mod n = 139034, which is a unit, inverse 113719.
<p>(59 * 397) divides n-1.
<p>(59 * 397)^2 > n.
<p>n is prime by Pocklington's theorem.