Problem of the Week

A new problem every Monday that challenges participants of all ages to think creatively and apply their math skills. Perfect for a weekly mental challenge.

Euler

Posted: July 7, 2025

94 % of users got this correct

Leonhard Euler (1707 – 1783) discovered that the integer x = 635318657 can be represented as the sum of two fourth powers in two ways.

If x = a⁴ + b⁴ = c⁴ + d⁴, give a+b+c+d.

View Past Problems