In mathematics, two integers (a and b) are coprime (or relatively prime) if they share no common factors. In other words, there is no number, other than 1, that divides both a and b evenly.
As an example, 6 and 35 are coprime, because the factors of 6, 2 and 3, do not divide 35 evenly. 6 and 27 are not coprime, because 3 divides both 6 and 27.
Properties of Coprime[change | change source]
1. Prime numbers are always coprime to each other.
2. Any two consecutive integers are always coprime.
3. Sum of any two coprime numbers is always coprime to their product.
4. 1 is trivially coprime with all numbers.
5. if out of two numbers , any one number is a prime number while other number is not a multiple of first one ,then both are coprime.