Primality proof for n = 108763483:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=18127247.html>18127247 is prime.</a>
<br>b^((n-1)/18127247)-1 mod n = 63, which is a unit, inverse 3452809.
<p>(18127247) divides n-1.
<p>(18127247)^2 > n.
<p>n is prime by Pocklington's theorem.