Greatest Common Factor of 81, 11, 80, 63

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

• Greatest Common Factor of 81, 11, 80, 63 by common division method
• Greatest Common Factor of 81, 11, 80, 63 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 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Greatest Common Factor

We found the factors 81,11,80,63 . The biggest common factor number is the GCF number.
So the greatest common factor 81,11,80,63 is 1.

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

• GCF of 80, 48, 21, 73
• GCF of 12, 51, 69, 15
• GCF of 98, 91, 97, 18
• GCF of 10, 89, 79, 79
• GCF of 26, 52, 85, 25

1. What is the GCF of 81, 11, 80, 63?

Answer: GCF of 81, 11, 80, 63 is 1.

2. How to Find the GCF of 81, 11, 80, 63

Answer: Greatest Common Factor(GCF) of 81, 11, 80, 63 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 11, 80, 63) = 1.