Primality proof for n = 186062272787:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=550480097.html>550480097 is prime.</a>
<br>b^((n-1)/550480097)-1 mod n = 126376036753, which is a unit, inverse 143409991108.
<p>(550480097) divides n-1.
<p>(550480097)^2 > n.
<p>n is prime by Pocklington's theorem.