Greatest Common Factor of 72, 81, 97, 640

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

• Greatest Common Factor of 72, 81, 97, 640 by common division method
• Greatest Common Factor of 72, 81, 97, 640 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 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 81

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

1,3,9,27,81

Factors of 97

List of positive integer factors of 97 that divides 97 without a remainder.

1,97

Factors of 640

List of positive integer factors of 640 that divides 640 without a remainder.

1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640

Greatest Common Factor

We found the factors 72,81,97,640 . The biggest common factor number is the GCF number.
So the greatest common factor 72,81,97,640 is 1.

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

• GCF of 21, 32, 11, 927
• GCF of 98, 89, 58, 957
• GCF of 14, 30, 55, 330
• GCF of 51, 24, 98, 702
• GCF of 57, 17, 65, 360

1. What is the GCF of 72, 81, 97, 640?

Answer: GCF of 72, 81, 97, 640 is 1.

2. How to Find the GCF of 72, 81, 97, 640

Answer: Greatest Common Factor(GCF) of 72, 81, 97, 640 = 1

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

Step 2: Then multiply all the prime factors GCF(72, 81, 97, 640) = 1.