IMO 2014 Shortlist N5

Find all triples pp,x,yq consisting of a prime number p and two positive integers x and y such that xp´1 y and x yp´1 ar...

IMO 2014 Shortlist N5

Category: Number Theory

Problem

Find all triples pp,x,yq consisting of a prime number p and two positive integers x and y such that xp´1 y and x yp´1 are both powers of p. (Belgium)