Primality proof for n = 11290956913871:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=66417393611.html>66417393611 is prime.</a>
<br>b^((n-1)/66417393611)-1 mod n = 11005834445931, which is a unit, inverse 4247528171144.
<p>(66417393611) divides n-1.
<p>(66417393611)^2 > n.
<p>n is prime by Pocklington's theorem.