Primality proof for n = 1738691:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=9151.html>9151 is prime.</a>
<br>b^((n-1)/9151)-1 mod n = 696823, which is a unit, inverse 961406.
<p>(9151) divides n-1.
<p>(9151)^2 > n.
<p>n is prime by Pocklington's theorem.