Q: What is the greatest common factor of 420 and 630?

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The answer is 35.

210

It is: 63

There is neither a greatest common factor nor common factors of a single number, such as 630, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor.

The prime factorization of 525 is 3*7*5*5The prime factorization of 630 is 2*3*3*5*7The factors they have in common are 3*5*7 = 105, so the greatest common factor is 105.

Related questions

The greatest common factor of 108 and 630 is 18.

The greatest common factor of 630 , 1155 = 105

The greatest common factor of 630 , 172 = 2

The greatest common factor of 630 , 84 = 42

42

210

The answer is 35.

It is: 63

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.The greatest common factor of 336 and 630 is 42

The GCF is 7.

The GCF is 630.

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.The greatest common factor of 300 and 630 is 30