MathDB
2013 preRMO p1 k(3^3 + 4^3 + 5^3) = a^n

Source:

August 8, 2019
number theoryminimum

Problem Statement

What is the smallest positive integer kk such that k(33+43+53)=ank(3^3 + 4^3 + 5^3) = a^n for some positive integers aa and nn, with n>1n > 1?