Primality proof for n = 2384153:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=5623.html>5623 is prime.</a>
<br>b^((n-1)/5623)-1 mod n = 1249200, which is a unit, inverse 711091.
<p>(5623) divides n-1.
<p>(5623)^2 > n.
<p>n is prime by Pocklington's theorem.