Greatest Common Factor of 420, 690

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 420, 690 i.e. 30 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 420, 690 is 30.

GCF(420, 690) = 30

GCF of 420, 690

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

GCF of:

Greatest Common Factor of 420,690

GCF of 420,690 is 30

2 420, 690
3 210, 345
5 70, 115
14, 23

∴ So the GCF of the given numbers is 2 x 3 x 5 = 30

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

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 690

List of positive integer factors of 690 that divides 690 without a remainder.

1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690

Greatest Common Factor

We found the factors 420,690 . The biggest common factor number is the GCF number.
So the greatest common factor 420,690 is 30.

GCF of two or more Numbers Calculation Examples

Here are some samples of GCF of two or more Numbers calculations.

Frequently Asked Questions on GCF of 420, 690

1. What is the GCF of 420, 690?

Answer: GCF of 420, 690 is 30.

2. How to Find the GCF of 420, 690

Answer: Greatest Common Factor(GCF) of 420, 690 = 30

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

Step 2: Then multiply all the prime factors GCF(420, 690) = 30.