Co-Prime Numbers (Relatively Prime Numbers)

Co-Prime Numbers (Relatively Prime Numbers):-

Pair of numbers that do not have any common factor except 1 are known as Co-prime numbers.

Eg . (9,16)
Factors of 9 -> 1, 3, 9
Factors of 16 -> 1, 2, 4, 8, 16

Remember:-
1. One is co-prime with any other number. (1,2) , (1,3) …
2. Two Consecutive numbers are always co-prime.
3. A prime number is co-prime with all numbers except its multiple.
4. Two prime numbers are always co-prime.