Primality proof for n = 1736389:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=347.html>347 is prime.</a>
<br>b^((n-1)/347)-1 mod n = 1514888, which is a unit, inverse 46604.
<p><a href=139.html>139 is prime.</a>
<br>b^((n-1)/139)-1 mod n = 859161, which is a unit, inverse 1231532.
<p>(139 * 347) divides n-1.
<p>(139 * 347)^2 > n.
<p>n is prime by Pocklington's theorem.