Pre GCD

If a number is a divisor of both p and q, then we say that the number is a ____ of p and q.

Common divisors are also referred to as _____

For example, the divisors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30 (and their negations). The divisors of 96 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, and 96 (and their negations). The numbers in both lists are 1, 2, 3, and 6 (and their negations); these are the _____of 30 and 96.

The greatest positive integer that is a divisor of both p and q is called the ____ of p and q.

Among all the common divisors of 30 and 96, the largest is 6 . So the _____ or greatest common factor, of 30 and 96 is 6

Two numbers are relatively prime if their greatest common divisor is ___