Greatest Common Factor of 780, 1290
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 780, 1290 i.e. 30 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 780, 1290 is 30.
GCF(780, 1290) = 30
GCF of 780, 1290
Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways
- Greatest Common Factor of 780, 1290 by common division method
- Greatest Common Factor of 780, 1290 with matching the biggest common factor
GCF of 780,1290 is 30
| 2 | 780, 1290 |
| 3 | 390, 645 |
| 5 | 130, 215 |
| 26, 43 |
∴ So the GCF of the given numbers is 2 x 3 x 5 = 30
Factors of 780
List of positive integer factors of 780 that divides 780 without a remainder.
1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780
Factors of 1290
List of positive integer factors of 1290 that divides 1290 without a remainder.
1,2,3,5,6,10,15,30,43,86,129,215,258,430,645,1290
Greatest Common Factor
We found the factors 780,1290 . The biggest common factor number is the GCF number.
So the greatest common factor 780,1290 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 780, 1290
1. What is the GCF of 780, 1290?
Answer: GCF of 780, 1290 is 30.
2. How to Find the GCF of 780, 1290
Answer: Greatest Common Factor(GCF) of 780, 1290 = 30
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(780, 1290) = 30.