Primality proof for n = 3075203:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=118277.html>118277 is prime.</a>
<br>b^((n-1)/118277)-1 mod n = 2529600, which is a unit, inverse 1889340.
<p>(118277) divides n-1.
<p>(118277)^2 > n.
<p>n is prime by Pocklington's theorem.