Primality proof for n = 495959:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=503.html>503 is prime.</a>
<br>b^((n-1)/503)-1 mod n = 199417, which is a unit, inverse 95122.
<p><a href=29.html>29 is prime.</a>
<br>b^((n-1)/29)-1 mod n = 667, which is a unit, inverse 473652.
<p>(29 * 503) divides n-1.
<p>(29 * 503)^2 > n.
<p>n is prime by Pocklington's theorem.