Greatest Common Factor of 78, 17, 64, 56

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

• Greatest Common Factor of 78, 17, 64, 56 by common division method
• Greatest Common Factor of 78, 17, 64, 56 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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 56

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

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

Greatest Common Factor

We found the factors 78,17,64,56 . The biggest common factor number is the GCF number.
So the greatest common factor 78,17,64,56 is 1.

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

• GCF of 51, 57, 10, 46
• GCF of 48, 55, 12, 90
• GCF of 43, 11, 64, 95
• GCF of 23, 25, 53, 50
• GCF of 55, 39, 67, 89

1. What is the GCF of 78, 17, 64, 56?

Answer: GCF of 78, 17, 64, 56 is 1.

2. How to Find the GCF of 78, 17, 64, 56

Answer: Greatest Common Factor(GCF) of 78, 17, 64, 56 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 17, 64, 56) = 1.