Primality proof for n = 30203:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=15101.html>15101 is prime.</a>
<br>b^((n-1)/15101)-1 mod n = 3, which is a unit, inverse 10068.
<p>(15101) divides n-1.
<p>(15101)^2 > n.
<p>n is prime by Pocklington's theorem.