Primality proof for n = 6030103:
Take b = 2.
b^(n-1) mod n = 1.
797 is prime.
b^((n-1)/797)-1 mod n = 4747721, which is a unit, inverse 3435848.
97 is prime.
b^((n-1)/97)-1 mod n = 2399131, which is a unit, inverse 5752844.
(97 * 797) divides n-1.
(97 * 797)^2 > n.
n is prime by Pocklington's theorem.