Primality proof for n = 54897371:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=499067.html>499067 is prime.</a>
<br>b^((n-1)/499067)-1 mod n = 10220583, which is a unit, inverse 8727416.
<p>(499067) divides n-1.
<p>(499067)^2 > n.
<p>n is prime by Pocklington's theorem.