Primality proof for n = 78751358483857:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=1640653301747.html>1640653301747 is prime.</a>
<br>b^((n-1)/1640653301747)-1 mod n = 45220901259084, which is a unit, inverse 55112987644395.
<p>(1640653301747) divides n-1.
<p>(1640653301747)^2 > n.
<p>n is prime by Pocklington's theorem.