Greatest Common Factor of 56, 79, 21

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

• Greatest Common Factor of 56, 79, 21 by common division method
• Greatest Common Factor of 56, 79, 21 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 56,79,21 . The biggest common factor number is the GCF number.
So the greatest common factor 56,79,21 is 1.

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

• GCF of 54, 12, 13
• GCF of 55, 10, 78
• GCF of 35, 92, 67
• GCF of 58, 43, 11
• GCF of 60, 97, 42

1. What is the GCF of 56, 79, 21?

Answer: GCF of 56, 79, 21 is 1.

2. How to Find the GCF of 56, 79, 21

Answer: Greatest Common Factor(GCF) of 56, 79, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(56, 79, 21) = 1.