Primality proof for n = 73827037:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=43633.html>43633 is prime.</a>
<br>b^((n-1)/43633)-1 mod n = 43099735, which is a unit, inverse 60151063.
<p>(43633) divides n-1.
<p>(43633)^2 > n.
<p>n is prime by Pocklington's theorem.