Primality proof for n = 2633:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=47.html>47 is prime.</a>
<br>b^((n-1)/47)-1 mod n = 1523, which is a unit, inverse 2531.
<p><a href=7.html>7 is prime.</a>
<br>b^((n-1)/7)-1 mod n = 1503, which is a unit, inverse 2393.
<p>(7 * 47) divides n-1.
<p>(7 * 47)^2 > n.
<p>n is prime by Pocklington's theorem.