Primality proof for n = 64817:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=4051.html>4051 is prime.</a>
<br>b^((n-1)/4051)-1 mod n = 718, which is a unit, inverse 39811.
<p>(4051) divides n-1.
<p>(4051)^2 > n.
<p>n is prime by Pocklington's theorem.