Primality proof for n = 142183:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=2633.html>2633 is prime.</a>
<br>b^((n-1)/2633)-1 mod n = 44863, which is a unit, inverse 140966.
<p>(2633) divides n-1.
<p>(2633)^2 > n.
<p>n is prime by Pocklington's theorem.