Greatest Common Factor of 56, 53, 51, 21

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

• Greatest Common Factor of 56, 53, 51, 21 by common division method
• Greatest Common Factor of 56, 53, 51, 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 53

List of positive integer factors of 53 that divides 53 without a remainder.

1,53

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

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 56,53,51,21 . The biggest common factor number is the GCF number.
So the greatest common factor 56,53,51,21 is 1.

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

• GCF of 77, 53, 88, 12
• GCF of 60, 81, 54, 14
• GCF of 32, 53, 92, 43
• GCF of 43, 62, 76, 28
• GCF of 97, 51, 86, 27

1. What is the GCF of 56, 53, 51, 21?

Answer: GCF of 56, 53, 51, 21 is 1.

2. How to Find the GCF of 56, 53, 51, 21

Answer: Greatest Common Factor(GCF) of 56, 53, 51, 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, 53, 51, 21) = 1.