Primality proof for n = 485175917:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=134921.html>134921 is prime.</a>
<br>b^((n-1)/134921)-1 mod n = 483358435, which is a unit, inverse 396754500.
<p>(134921) divides n-1.
<p>(134921)^2 > n.
<p>n is prime by Pocklington's theorem.