Primality proof for n = 532731547:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=13721.html>13721 is prime.</a>
<br>b^((n-1)/13721)-1 mod n = 386709404, which is a unit, inverse 260196056.
<p><a href=719.html>719 is prime.</a>
<br>b^((n-1)/719)-1 mod n = 20762579, which is a unit, inverse 219175175.
<p>(719 * 13721) divides n-1.
<p>(719 * 13721)^2 > n.
<p>n is prime by Pocklington's theorem.