Primality proof for n = 44573927:

Take b = 2.

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

220663 is prime.
b^((n-1)/220663)-1 mod n = 8909818, which is a unit, inverse 16137567.

(220663) divides n-1.

(220663)^2 > n.

n is prime by Pocklington's theorem.