Primality proof for n = 6700417:
<p>Take b = 3.
<p>b^(n-1) mod n = 1.
<p><a href=17449.html>17449 is prime.</a>
<br>b^((n-1)/17449)-1 mod n = 5846539, which is a unit, inverse 4499094.
<p>(17449) divides n-1.
<p>(17449)^2 > n.
<p>n is prime by Pocklington's theorem.