Primality proof for n = 5859383:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=30203.html>30203 is prime.</a>
<br>b^((n-1)/30203)-1 mod n = 62169, which is a unit, inverse 679820.
<p>(30203) divides n-1.
<p>(30203)^2 > n.
<p>n is prime by Pocklington's theorem.