Greatest Common Factor of 72, 81, 85, 71

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

• Greatest Common Factor of 72, 81, 85, 71 by common division method
• Greatest Common Factor of 72, 81, 85, 71 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 85

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

1,5,17,85

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Greatest Common Factor

We found the factors 72,81,85,71 . The biggest common factor number is the GCF number.
So the greatest common factor 72,81,85,71 is 1.

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

• GCF of 64, 91, 45, 80
• GCF of 59, 38, 60, 85
• GCF of 76, 16, 24, 61
• GCF of 51, 12, 80, 21
• GCF of 98, 53, 70, 16

1. What is the GCF of 72, 81, 85, 71?

Answer: GCF of 72, 81, 85, 71 is 1.

2. How to Find the GCF of 72, 81, 85, 71

Answer: Greatest Common Factor(GCF) of 72, 81, 85, 71 = 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, 85, 71) = 1.