Primality proof for n = 6317:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=1579.html>1579 is prime.</a>
<br>b^((n-1)/1579)-1 mod n = 15, which is a unit, inverse 2948.
<p>(1579) divides n-1.
<p>(1579)^2 > n.
<p>n is prime by Pocklington's theorem.