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The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.

Since 17 is a single number, you could say that it shares all of its factors with itself. So the greatest factor of 17 is 17.

17 is a Prime number, so the gcf of 17 would be 1.

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Apart from the fact that a single number cannot have a COMMON factor - greatest or least, 17 does have a greater factor than 1. And that is 17 itself!

A number cannot have a gcf...need at least two

You need at least two numbers to find a GCF.

Q: What is the greatest common factor of 17?

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The greatest common factor of 34 , 17 = 17

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Greatest common factor of 51 and 34 is 17.

17

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