Two numbers are said to be co-primes if they do not share any common divisor except for 1. For example, 9 and 10 are co-primes. Number 9 has factors 1,3,9 and 10 has 1,2,5,10. Only 1 is common. So, these two are co-prime numbers.
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Two (or more) numbers are said to be co-prime if they have no prime factor in common. The numbers, themselves need not be prime. Thus, 14 (= 2*7) and 15 (= 3*5) are co-prime.
Relatively prime or co-prime.
no first of all 16 is not a prime no so it can not fit for any prime no to be co prime
2 is the smallest prime number. It is co-prime with every odd number.
7 is co-prime to both 6 and 8.