Greatest Common Factor of 780 and 787

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 780, 787 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 780 and 787 is 1.

GCF(780,787) = 1

GCF of 780 and 787

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 780 and 787

GCF of 780 and 787 is 1

Prime Factorization of 780


2 780
2 390
3 195
5 65
13 13
1

Prime factors of 780 are 2,3,5,13. Prime factorization of 780 in exponential form is:

780 = 22×31×51×131

Prime Factorization of 787


787 787
1

Prime factors of 787 are 787. Prime factorization of 787 in exponential form is:

787 = 7871

∴ So by taking common prime factors GCF of 780 and 787 is 1

Greatest Common Factor of 780 and 787 by matching factors method

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 787

List of positive integer factors of 787 that divides 787 without a remainder.

1,787

Greatest Common Factor

We found the factors and prime factorization of 780 and 787. The biggest common factor number is the GCF number.
So the greatest common factor 780 and 787 is 1.

Also check out the Least Common Multiple of 780 and 787

Properties of GCF 780 and 787

(i) The GCF of 780 and 787 is associative

GCF of 780 and 787 = GCF of 787 and 780

Related Greatest Common Factor of 780

Related Greatest Common Factor of 787

Frequently Asked Questions on GCF of 780 and 787

1. What is the GCF of 780 and 787?

Answer: GCF of 780 and 787 is 1.

2. What are the Factors of 780?

Answer: Factors of 780 are 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780. There are 24 integers that are factors of 780. The greatest factor of 780 is 780.

3. What are the Factors of 787?

Answer: Factors of 787 are 1, 787. There are 2 integers that are factors of 787. The greatest factor of 787 is 787.

4. How to Find the GCF of 780 and 787?

Answer:

Greatest Common Factor of 780 and 787 = 1

Step 1: Find the prime factorization of 780

780 = 2 x 2 x 3 x 5 x 13

Step 2: Find the prime factorization of 787

787 = 787

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = = 1

Step 4: Therefore, the greatest common factor of 780 and 787 is 1