Greatest Common Factor of 620 and 621

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 620, 621 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 620 and 621 is 1.

GCF(620,621) = 1

GCF of 620 and 621

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

GCF of:
and

Greatest Common Factor of 620 and 621

GCF of 620 and 621 is 1

Prime Factorization of 620


2 620
2 310
5 155
31 31
1

Prime factors of 620 are 2,5,31. Prime factorization of 620 in exponential form is:

620 = 22×51×311

Prime Factorization of 621


3 621
3 207
3 69
23 23
1

Prime factors of 621 are 3,23. Prime factorization of 621 in exponential form is:

621 = 33×231

∴ So by taking common prime factors GCF of 620 and 621 is 1

Greatest Common Factor of 620 and 621 by matching factors method

Factors of 620

List of positive integer factors of 620 that divides 620 without a remainder.

1,2,4,5,10,20,31,62,124,155,310,620

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Greatest Common Factor

We found the factors and prime factorization of 620 and 621. The biggest common factor number is the GCF number.
So the greatest common factor 620 and 621 is 1.

Also check out the Least Common Multiple of 620 and 621

Properties of GCF 620 and 621

(i) The GCF of 620 and 621 is associative

GCF of 620 and 621 = GCF of 621 and 620

Related Greatest Common Factor of 620

Related Greatest Common Factor of 621

Frequently Asked Questions on GCF of 620 and 621

1. What is the GCF of 620 and 621?

Answer: GCF of 620 and 621 is 1.

2. What are the Factors of 620?

Answer: Factors of 620 are 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620. There are 12 integers that are factors of 620. The greatest factor of 620 is 620.

3. What are the Factors of 621?

Answer: Factors of 621 are 1, 3, 9, 23, 27, 69, 207, 621. There are 8 integers that are factors of 621. The greatest factor of 621 is 621.

4. How to Find the GCF of 620 and 621?

Answer:

Greatest Common Factor of 620 and 621 = 1

Step 1: Find the prime factorization of 620

620 = 2 x 2 x 5 x 31

Step 2: Find the prime factorization of 621

621 = 3 x 3 x 3 x 23

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 620 and 621 is 1