Primality proof for n = 760939013:

Take b = 2.

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

190234753 is prime.
b^((n-1)/190234753)-1 mod n = 15, which is a unit, inverse 659480478.

(190234753) divides n-1.

(190234753)^2 > n.

n is prime by Pocklington's theorem.