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Greatest Common Factor of 66, 21, 39, 63

GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 66, 21, 39, 63 i.e. 3 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 66, 21, 39, 63 is 3.

GCF(66, 21, 39, 63) = 3

GCF of 66, 21, 39, 63

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

GCF of:

Greatest Common Factor (GCF) of 66,21,39,63 By Common Division

3 66, 21, 39, 63
22, 7, 13, 21

∴ So the GCF of the given numbers is 3 = 3

Greatest Common Factor (GCF) By Matching Biggest Common Factor Method

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Greatest Common Factor

We found the factors 66,21,39,63 . The biggest common factor number is the GCF number.
So the greatest common factor 66,21,39,63 is 3.

GCF of two or more Numbers Calculation Examples

Here are some samples of GCF of two or more Numbers calculations.

Frequently Asked Questions on GCF of 66, 21, 39, 63

1. What is the GCF of 66, 21, 39, 63?

Answer: GCF of 66, 21, 39, 63 is 3.

2. How to Find the GCF of 66, 21, 39, 63

Answer: Greatest Common Factor(GCF) of 66, 21, 39, 63 = 3

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(66, 21, 39, 63) = 3.