Primality proof for n = 158769362377:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=59598109.html>59598109 is prime.</a>
<br>b^((n-1)/59598109)-1 mod n = 1812215223, which is a unit, inverse 61280220467.
<p>(59598109) divides n-1.
<p>(59598109)^2 > n.
<p>n is prime by Pocklington's theorem.