MathDB
Sum of powers

Source: APMC 2001

April 17, 2006
modular arithmeticnumber theory proposednumber theory

Problem Statement

Determine the number of positive integers aa, so that there exist nonnegative integers x0,x1,,x2001x_0,x_1,\ldots,x_{2001} which satisfy the equation ax0=i=12001axi \displaystyle a^{x_0} = \sum_{i=1}^{2001} a^{x_i}