Primality proof for n = 1468547:

Take b = 2.

b^(n-1) mod n = 1.

734273 is prime.
b^((n-1)/734273)-1 mod n = 3, which is a unit, inverse 489516.

(734273) divides n-1.

(734273)^2 > n.

n is prime by Pocklington's theorem.