Primality proof for n = 2245631:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=224563.html>224563 is prime.</a>
<br>b^((n-1)/224563)-1 mod n = 1023, which is a unit, inverse 15366.
<p>(224563) divides n-1.
<p>(224563)^2 > n.
<p>n is prime by Pocklington's theorem.