13427...60193 (8619-digits)

This number is a prime.

8127*952^2892+1 is prime. Note that 8127 is similar to a Vampire number: 81*27 = 2187, 952 = 9^3 + 5^3 +2^3 + 9*5*2, and 2^8 + 9^2 is prime. [Earls]