Primality proof for n = 152077:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=29.html>29 is prime.</a>
<br>b^((n-1)/29)-1 mod n = 135191, which is a unit, inverse 126977.
<p><a href=23.html>23 is prime.</a>
<br>b^((n-1)/23)-1 mod n = 130366, which is a unit, inverse 13687.
<p>(23 * 29) divides n-1.
<p>(23 * 29)^2 > n.
<p>n is prime by Pocklington's theorem.