IMO 2024 Shortlist N4

Determine all positive integers a and b such that there exists a positive integer g such that gcdpan b,bn aq “ g for all...

IMO 2024 Shortlist N4

Category: Number Theory

Problem

Determine all positive integers a and b such that there exists a positive integer g such that gcdpan b,bn aq “ g for all sufficiently large n. (Indonesia)