MathDB
Oliforum contest- final round - problem2

Source:

December 8, 2008
number theorygreatest common divisornumber theory unsolved

Problem Statement

Find all non-negative integers x,y,z x,y,z such that 5^x \plus{} 7^y \equal{} 2^z. :lol: (Daniel Kohen, University of Buenos Aires - Buenos Aires,Argentina)