Primality proof for n = 3734491:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=443.html>443 is prime.</a>
<br>b^((n-1)/443)-1 mod n = 1757904, which is a unit, inverse 3403962.
<p><a href=281.html>281 is prime.</a>
<br>b^((n-1)/281)-1 mod n = 1474772, which is a unit, inverse 642019.
<p>(281 * 443) divides n-1.
<p>(281 * 443)^2 > n.
<p>n is prime by Pocklington's theorem.