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 51, 21, 66, 81 i.e. 3 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 51, 21, 66, 81 is 3.
GCF(51, 21, 66, 81) = 3
Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways
3 | 51, 21, 66, 81 |
17, 7, 22, 27 |
∴ So the GCF of the given numbers is 3 = 3
Factors of 51
List of positive integer factors of 51 that divides 51 without a remainder.
1,3,17,51
Factors of 21
List of positive integer factors of 21 that divides 21 without a remainder.
1,3,7,21
Factors of 66
List of positive integer factors of 66 that divides 66 without a remainder.
1,2,3,6,11,22,33,66
Factors of 81
List of positive integer factors of 81 that divides 81 without a remainder.
1,3,9,27,81
Greatest Common Factor
We found the factors 51,21,66,81 . The biggest common factor number is the GCF number.
So the greatest common factor 51,21,66,81 is 3.
Here are some samples of GCF of two or more Numbers calculations.
1. What is the GCF of 51, 21, 66, 81?
Answer: GCF of 51, 21, 66, 81 is 3.
2. How to Find the GCF of 51, 21, 66, 81
Answer: Greatest Common Factor(GCF) of 51, 21, 66, 81 = 3
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(51, 21, 66, 81) = 3.