Primality proof for n = 149899:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=83.html>83 is prime.</a>
<br>b^((n-1)/83)-1 mod n = 42108, which is a unit, inverse 66744.
<p><a href=43.html>43 is prime.</a>
<br>b^((n-1)/43)-1 mod n = 7457, which is a unit, inverse 84528.
<p>(43 * 83) divides n-1.
<p>(43 * 83)^2 > n.
<p>n is prime by Pocklington's theorem.