Greatest Common Factor of 81, 16, 12, 55

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

• Greatest Common Factor of 81, 16, 12, 55 by common division method
• Greatest Common Factor of 81, 16, 12, 55 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 81

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

1,3,9,27,81

Factors of 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Greatest Common Factor

We found the factors 81,16,12,55 . The biggest common factor number is the GCF number.
So the greatest common factor 81,16,12,55 is 1.

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

• GCF of 56, 70, 52, 69
• GCF of 69, 40, 67, 30
• GCF of 33, 10, 36, 84
• GCF of 66, 65, 91, 60
• GCF of 86, 83, 28, 88

1. What is the GCF of 81, 16, 12, 55?

Answer: GCF of 81, 16, 12, 55 is 1.

2. How to Find the GCF of 81, 16, 12, 55

Answer: Greatest Common Factor(GCF) of 81, 16, 12, 55 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 16, 12, 55) = 1.