Primality proof for n = 33923599:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=152809.html>152809 is prime.</a>
<br>b^((n-1)/152809)-1 mod n = 9340464, which is a unit, inverse 12720823.
<p>(152809) divides n-1.
<p>(152809)^2 > n.
<p>n is prime by Pocklington's theorem.