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A Prime number is a number with exactly 2 divisors: 1 and itself.

Because of this, the only common divisor of two distinct prime numbers is 1, thus 1 is the gcf.

So the correct answer would be:

Given two prime numbers, namely x and y, the gcf is

--- 1, if x and y are unequally

--- x, if x=y.

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7y ago

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