Primality proof for n = 19920925890426226515689032734344471:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=1632500449985791.html>1632500449985791 is prime.</a>
<br>b^((n-1)/1632500449985791)-1 mod n = 14093731092224632980825067375814556, which is a unit, inverse 19370752468304835148074963681665270.
<p><a href=4310859807493.html>4310859807493 is prime.</a>
<br>b^((n-1)/4310859807493)-1 mod n = 12405873217136715948481698156536157, which is a unit, inverse 3777502599179378996957533529262410.
<p>(4310859807493 * 1632500449985791) divides n-1.
<p>(4310859807493 * 1632500449985791)^2 > n.
<p>n is prime by Pocklington's theorem.