83

This number is a prime.

(83, 89, 97) is the 2nd case of three successive 2-digit primes (p, q, r) such that p|(qr-1), i.e., 83 divides 89*97-1. The first such case is (11, 13, 17). Are there three larger consecutive primes p < q < r such that p|(qr – 1)? [Loungrides]