Question

what are coprime numbers​

Answer 1

Two integers p and q are said to be co-prime if they have no common factor other than 1. ⇒ HCF of co-prime numbers p and q = 1 For example, (17, 23), (5, 7), (11, 19) are co-prime numbers as they don't have any other common factor except 1. Now, the number (17, 23), (5, 7), (11, 19) are known as co-prime pairs.

Answer 2

In number theory, two integers a and b are said to be relatively prime, mutually prime, or coprime if the only positive integer that divides both of them is 1. Consequently, any prime number that divides one does not divide the other. This is equivalent to their greatest common divisor being 1.