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 20, 43, 71, 639 i.e. 1 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 20, 43, 71, 639 is 1.
GCF(20, 43, 71, 639) = 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 20
List of positive integer factors of 20 that divides 20 without a remainder.
1,2,4,5,10,20
Factors of 43
List of positive integer factors of 43 that divides 43 without a remainder.
1,43
Factors of 71
List of positive integer factors of 71 that divides 71 without a remainder.
1,71
Factors of 639
List of positive integer factors of 639 that divides 639 without a remainder.
1,3,9,71,213,639
Greatest Common Factor
We found the factors 20,43,71,639 . The biggest common factor number is the GCF number.
So the greatest common factor 20,43,71,639 is 1.
Here are some samples of GCF of two or more Numbers calculations.
1. What is the GCF of 20, 43, 71, 639?
Answer: GCF of 20, 43, 71, 639 is 1.
2. How to Find the GCF of 20, 43, 71, 639
Answer: Greatest Common Factor(GCF) of 20, 43, 71, 639 = 1
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(20, 43, 71, 639) = 1.