Primality proof for n = 85999:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=1303.html>1303 is prime.</a>
<br>b^((n-1)/1303)-1 mod n = 11851, which is a unit, inverse 14107.
<p>(1303) divides n-1.
<p>(1303)^2 > n.
<p>n is prime by Pocklington's theorem.