Primality proof for n = 397429:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=33119.html>33119 is prime.</a>
<br>b^((n-1)/33119)-1 mod n = 4095, which is a unit, inverse 287857.
<p>(33119) divides n-1.
<p>(33119)^2 > n.
<p>n is prime by Pocklington's theorem.