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 65, 72, 81, 21, 60 i.e. 1 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 65, 72, 81, 21, 60 is 1.
GCF(65, 72, 81, 21, 60) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways
∴ GCF of numbers is 1 because of no common factors present between them.
Factors of 65
List of positive integer factors of 65 that divides 65 without a remainder.
1,5,13,65
Factors of 72
List of positive integer factors of 72 that divides 72 without a remainder.
1,2,3,4,6,8,9,12,18,24,36,72
Factors of 81
List of positive integer factors of 81 that divides 81 without a remainder.
1,3,9,27,81
Factors of 21
List of positive integer factors of 21 that divides 21 without a remainder.
1,3,7,21
Factors of 60
List of positive integer factors of 60 that divides 60 without a remainder.
1,2,3,4,5,6,10,12,15,20,30,60
Greatest Common Factor
We found the factors 65,72,81,21,60 . The biggest common factor number is the GCF number.
So the greatest common factor 65,72,81,21,60 is 1.
Here are some samples of GCF of two or more Numbers calculations.
1. What is the GCF of 65, 72, 81, 21, 60?
Answer: GCF of 65, 72, 81, 21, 60 is 1.
2. How to Find the GCF of 65, 72, 81, 21, 60
Answer: Greatest Common Factor(GCF) of 65, 72, 81, 21, 60 = 1
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(65, 72, 81, 21, 60) = 1.