Primality proof for n = 1418023:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=78779.html>78779 is prime.</a>
<br>b^((n-1)/78779)-1 mod n = 262143, which is a unit, inverse 269510.
<p>(78779) divides n-1.
<p>(78779)^2 > n.
<p>n is prime by Pocklington's theorem.