Primality proof for n = 1033337:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=3491.html>3491 is prime.</a>
<br>b^((n-1)/3491)-1 mod n = 785315, which is a unit, inverse 127210.
<p>(3491) divides n-1.
<p>(3491)^2 > n.
<p>n is prime by Pocklington's theorem.