MathDB

Problem 2

Part of 1979 Yugoslav Team Selection Test

Problems(1)

n s.t. gcd(m,n)=1->n prime

Source: Yugoslav TST 1979 P2

5/30/2021
Find all integers nn with 1<n<19791<n<1979 having the following property: If mm is an integer coprime with nn and 1<m<n1<m<n, then mm is a prime number.
number theory