Greatest Common Factor of 68, 81, 57, 64

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

• Greatest Common Factor of 68, 81, 57, 64 by common division method
• Greatest Common Factor of 68, 81, 57, 64 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 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 64

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

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

Greatest Common Factor

We found the factors 68,81,57,64 . The biggest common factor number is the GCF number.
So the greatest common factor 68,81,57,64 is 1.

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

• GCF of 17, 72, 92, 89
• GCF of 92, 54, 54, 83
• GCF of 37, 70, 58, 54
• GCF of 81, 60, 12, 91
• GCF of 18, 15, 96, 22

1. What is the GCF of 68, 81, 57, 64?

Answer: GCF of 68, 81, 57, 64 is 1.

2. How to Find the GCF of 68, 81, 57, 64

Answer: Greatest Common Factor(GCF) of 68, 81, 57, 64 = 1

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

Step 2: Then multiply all the prime factors GCF(68, 81, 57, 64) = 1.