Primality proof for n = 9801157:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=816763.html>816763 is prime.</a>
<br>b^((n-1)/816763)-1 mod n = 4095, which is a unit, inverse 543312.
<p>(816763) divides n-1.
<p>(816763)^2 > n.
<p>n is prime by Pocklington's theorem.