Problem #PRU-65001

Problemas Cálculo Secuencias numéricas Secuencias numéricas (otras) Teoría de Números Divisibilidad El teorema fundamental de la aritmética. Factorización prima.

Problem

In a row there are 20 different natural numbers. The product of every two of them standing next to one another is the square of a natural number. The first number is 42. Prove that at least one of the numbers is greater than 16,000.