Primality proof for n = 18127247:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=9063623.html>9063623 is prime.</a>
<br>b^((n-1)/9063623)-1 mod n = 3, which is a unit, inverse 6042416.
<p>(9063623) divides n-1.
<p>(9063623)^2 > n.
<p>n is prime by Pocklington's theorem.