Primality proof for n = 961549:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=11447.html>11447 is prime.</a>
<br>b^((n-1)/11447)-1 mod n = 224668, which is a unit, inverse 524947.
<p>(11447) divides n-1.
<p>(11447)^2 > n.
<p>n is prime by Pocklington's theorem.