MathDB
Divisible by 121

Source: VAIMO 1, German Pre-TST 2002

July 17, 2011
quadraticsnumber theory unsolvednumber theory

Problem Statement

Determine the number of all numbers which are represented as x2+y2x^2+y^2 with x,y{1,2,3,,1000}x, y \in \{1, 2, 3, \ldots, 1000\} and which are divisible by 121.