Primality proof for n = 21325306200707:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=11602451687.html>11602451687 is prime.</a>
<br>b^((n-1)/11602451687)-1 mod n = 10415373721917, which is a unit, inverse 14514569667596.
<p>(11602451687) divides n-1.
<p>(11602451687)^2 > n.
<p>n is prime by Pocklington's theorem.