Greatest Common Factor of 81, 13, 21, 268

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

• Greatest Common Factor of 81, 13, 21, 268 by common division method
• Greatest Common Factor of 81, 13, 21, 268 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 268

List of positive integer factors of 268 that divides 268 without a remainder.

1,2,4,67,134,268

Greatest Common Factor

We found the factors 81,13,21,268 . The biggest common factor number is the GCF number.
So the greatest common factor 81,13,21,268 is 1.

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

• GCF of 36, 94, 90, 490
• GCF of 73, 89, 43, 656
• GCF of 64, 44, 57, 545
• GCF of 68, 36, 98, 139
• GCF of 65, 21, 47, 882

1. What is the GCF of 81, 13, 21, 268?

Answer: GCF of 81, 13, 21, 268 is 1.

2. How to Find the GCF of 81, 13, 21, 268

Answer: Greatest Common Factor(GCF) of 81, 13, 21, 268 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 13, 21, 268) = 1.