Primality proof for n = 138463057:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=961549.html>961549 is prime.</a>
<br>b^((n-1)/961549)-1 mod n = 75069463, which is a unit, inverse 96854655.
<p>(961549) divides n-1.
<p>(961549)^2 > n.
<p>n is prime by Pocklington's theorem.