Greatest Common Factor of 13, 81, 37, 31

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

• Greatest Common Factor of 13, 81, 37, 31 by common division method
• Greatest Common Factor of 13, 81, 37, 31 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 13

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

1,13

Factors of 81

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

1,3,9,27,81

Factors of 37

List of positive integer factors of 37 that divides 37 without a remainder.

1,37

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Greatest Common Factor

We found the factors 13,81,37,31 . The biggest common factor number is the GCF number.
So the greatest common factor 13,81,37,31 is 1.

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

• GCF of 84, 98, 49, 39
• GCF of 13, 13, 96, 69
• GCF of 27, 29, 22, 68
• GCF of 19, 72, 89, 34
• GCF of 13, 66, 60, 19

1. What is the GCF of 13, 81, 37, 31?

Answer: GCF of 13, 81, 37, 31 is 1.

2. How to Find the GCF of 13, 81, 37, 31

Answer: Greatest Common Factor(GCF) of 13, 81, 37, 31 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 81, 37, 31) = 1.