Relatively prime意思

"Relatively prime" is a term used in number theory to describe two or more integers that have no common prime factors other than 1. In other words, their greatest common divisor (GCD) is 1. For example, the numbers 8 and 15 are relatively prime because their GCD is 1.

To be "relatively prime" does not mean that the numbers are prime; it simply means that they are not coprime. For instance, the numbers 4 and 9 are not relatively prime because their GCD is 1. However, the numbers 4 and 5 are relatively prime because their GCD is also 1.