Primality proof for n = 302579:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=151289.html>151289 is prime.</a>
<br>b^((n-1)/151289)-1 mod n = 3, which is a unit, inverse 100860.
<p>(151289) divides n-1.
<p>(151289)^2 > n.
<p>n is prime by Pocklington's theorem.