Greatest Common Factor of 15, 56, 66, 31

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

• Greatest Common Factor of 15, 56, 66, 31 by common division method
• Greatest Common Factor of 15, 56, 66, 31 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

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 66

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

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

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Greatest Common Factor

We found the factors 15,56,66,31 . The biggest common factor number is the GCF number.
So the greatest common factor 15,56,66,31 is 1.

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

• GCF of 10, 54, 70, 32
• GCF of 23, 83, 29, 98
• GCF of 49, 68, 24, 97
• GCF of 11, 41, 31, 96
• GCF of 38, 42, 55, 14

1. What is the GCF of 15, 56, 66, 31?

Answer: GCF of 15, 56, 66, 31 is 1.

2. How to Find the GCF of 15, 56, 66, 31

Answer: Greatest Common Factor(GCF) of 15, 56, 66, 31 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 56, 66, 31) = 1.