MathDB
SMT 2013 Advanced Topics #10

Source:

February 3, 2013

Problem Statement

Compute the number of positive integers bb where b2013b \le 2013, b17b \neq 17, and b18b \neq 18, such that there exists some positive integer NN such that N17\dfrac{N}{17} is a perfect 1717th power, N18\dfrac{N}{18} is a perfect 1818th power, and Nb\dfrac{N}{b} is a perfect bbth power.