Primality proof for n = 71741:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=211.html>211 is prime.</a>
<br>b^((n-1)/211)-1 mod n = 12880, which is a unit, inverse 27510.
<p><a href=17.html>17 is prime.</a>
<br>b^((n-1)/17)-1 mod n = 69378, which is a unit, inverse 44933.
<p>(17 * 211) divides n-1.
<p>(17 * 211)^2 > n.
<p>n is prime by Pocklington's theorem.