Greatest Common Factor of 56, 51, 42, 65

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

• Greatest Common Factor of 56, 51, 42, 65 by common division method
• Greatest Common Factor of 56, 51, 42, 65 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 51

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

1,3,17,51

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Greatest Common Factor

We found the factors 56,51,42,65 . The biggest common factor number is the GCF number.
So the greatest common factor 56,51,42,65 is 1.

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

• GCF of 89, 55, 23, 79
• GCF of 25, 80, 12, 21
• GCF of 21, 27, 94, 39
• GCF of 92, 40, 43, 93
• GCF of 21, 70, 55, 30

1. What is the GCF of 56, 51, 42, 65?

Answer: GCF of 56, 51, 42, 65 is 1.

2. How to Find the GCF of 56, 51, 42, 65

Answer: Greatest Common Factor(GCF) of 56, 51, 42, 65 = 1

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

Step 2: Then multiply all the prime factors GCF(56, 51, 42, 65) = 1.