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
- Greatest Common Factor of 420, 690 by common division method
- Greatest Common Factor of 420, 690 with matching the biggest common factor
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
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.