MathDB
Integers of three colors

Source: 44th International Tournament of Towns, Junior O-Level P4, Fall 2022

February 16, 2023
number theorycombinatoricsTournament of Towns

Problem Statement

Is it possible to colour all integers greater than 11{} in three colours (each integer in one colour, all three colours must be used) so that the colour of the product of any two differently coloured numbers is different from the colour of each of the factors?