Primality proof for n = 10882031:
Take b = 2.
b^(n-1) mod n = 1.
12227 is prime. b^((n-1)/12227)-1 mod n = 1661812, which is a unit, inverse 5160873.
(12227) divides n-1.
(12227)^2 > n.
n is prime by Pocklington's theorem.