Primality proof for n = 65390933:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=37409.html>37409 is prime.</a>
<br>b^((n-1)/37409)-1 mod n = 52265216, which is a unit, inverse 21561354.
<p>(37409) divides n-1.
<p>(37409)^2 > n.
<p>n is prime by Pocklington's theorem.