Greatest Common Factor of 64, 85, 77, 81

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

• Greatest Common Factor of 64, 85, 77, 81 by common division method
• Greatest Common Factor of 64, 85, 77, 81 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 64

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

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

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 81

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

1,3,9,27,81

Greatest Common Factor

We found the factors 64,85,77,81 . The biggest common factor number is the GCF number.
So the greatest common factor 64,85,77,81 is 1.

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

• GCF of 40, 21, 88, 94
• GCF of 25, 81, 40, 55
• GCF of 17, 30, 39, 45
• GCF of 71, 95, 49, 12
• GCF of 43, 23, 41, 69

1. What is the GCF of 64, 85, 77, 81?

Answer: GCF of 64, 85, 77, 81 is 1.

2. How to Find the GCF of 64, 85, 77, 81

Answer: Greatest Common Factor(GCF) of 64, 85, 77, 81 = 1

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

Step 2: Then multiply all the prime factors GCF(64, 85, 77, 81) = 1.