Primality proof for n = 3571:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=17.html>17 is prime.</a>
<br>b^((n-1)/17)-1 mod n = 1846, which is a unit, inverse 1151.
<p><a href=7.html>7 is prime.</a>
<br>b^((n-1)/7)-1 mod n = 2766, which is a unit, inverse 936.
<p>(7 * 17) divides n-1.
<p>(7 * 17)^2 > n.
<p>n is prime by Pocklington's theorem.