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.