MathDB
Infinitely many consecutive pairs of square-free integers

Source: 2018 Latvia BW TST P16

March 26, 2022
number theoryprime numbersnumber theory unsolved

Problem Statement

Call a natural number simple if it is not divisible by any square of a prime number (in other words it is square-free). Prove that there are infinitely many positive integers nn such that both nn and n+1n+1 are simple.