Greatest Common Factor of 18, 91, 21, 819

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023


GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 18, 91, 21, 819 i.e. 1 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 18, 91, 21, 819 is 1.

GCF(18, 91, 21, 819) = 1

GCF of 18, 91, 21, 819

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

GCF of:

Greatest Common Factor of 18,91,21,819

GCF of 18,91,21,819 is 1

∴ GCF of numbers is 1 because of no common factors present between them.

Greatest Common Factor (GCF) By Matching Biggest Common Factor Method

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 21

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

1,3,7,21

Factors of 819

List of positive integer factors of 819 that divides 819 without a remainder.

1,3,7,9,13,21,39,63,91,117,273,819

Greatest Common Factor

We found the factors 18,91,21,819 . The biggest common factor number is the GCF number.
So the greatest common factor 18,91,21,819 is 1.

GCF of two or more Numbers Calculation Examples

Frequently Asked Questions on GCF of 18, 91, 21, 819

1. What is the GCF of 18, 91, 21, 819?

Answer: GCF of 18, 91, 21, 819 is 1.

2. How to Find the GCF of 18, 91, 21, 819

Answer: Greatest Common Factor(GCF) of 18, 91, 21, 819 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 91, 21, 819) = 1.