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 42, 80, 90, 645 i.e. 1 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 42, 80, 90, 645 is 1.
GCF(42, 80, 90, 645) = 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 42
List of positive integer factors of 42 that divides 42 without a remainder.
1,2,3,6,7,14,21,42
Factors of 80
List of positive integer factors of 80 that divides 80 without a remainder.
1,2,4,5,8,10,16,20,40,80
Factors of 90
List of positive integer factors of 90 that divides 90 without a remainder.
1,2,3,5,6,9,10,15,18,30,45,90
Factors of 645
List of positive integer factors of 645 that divides 645 without a remainder.
1,3,5,15,43,129,215,645
Greatest Common Factor
We found the factors 42,80,90,645 . The biggest common factor number is the GCF number.
So the greatest common factor 42,80,90,645 is 1.
Here are some samples of GCF of two or more Numbers calculations.
1. What is the GCF of 42, 80, 90, 645?
Answer: GCF of 42, 80, 90, 645 is 1.
2. How to Find the GCF of 42, 80, 90, 645
Answer: Greatest Common Factor(GCF) of 42, 80, 90, 645 = 1
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(42, 80, 90, 645) = 1.