Primality proof for n = 1545857:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=929.html>929 is prime.</a>
<br>b^((n-1)/929)-1 mod n = 1293945, which is a unit, inverse 82137.
<p><a href=13.html>13 is prime.</a>
<br>b^((n-1)/13)-1 mod n = 681680, which is a unit, inverse 288.
<p>(13 * 929) divides n-1.
<p>(13 * 929)^2 > n.
<p>n is prime by Pocklington's theorem.