Greatest Common Factor of 816 and 821

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 816, 821 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 816 and 821 is 1.

GCF(816,821) = 1

GCF of 816 and 821

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

GCF of:
and

Greatest Common Factor of 816 and 821

GCF of 816 and 821 is 1

Prime Factorization of 816


2 816
2 408
2 204
2 102
3 51
17 17
1

Prime factors of 816 are 2,3,17. Prime factorization of 816 in exponential form is:

816 = 24×31×171

Prime Factorization of 821


821 821
1

Prime factors of 821 are 821. Prime factorization of 821 in exponential form is:

821 = 8211

∴ So by taking common prime factors GCF of 816 and 821 is 1

Greatest Common Factor of 816 and 821 by matching factors method

Factors of 816

List of positive integer factors of 816 that divides 816 without a remainder.

1,2,3,4,6,8,12,16,17,24,34,48,51,68,102,136,204,272,408,816

Factors of 821

List of positive integer factors of 821 that divides 821 without a remainder.

1,821

Greatest Common Factor

We found the factors and prime factorization of 816 and 821. The biggest common factor number is the GCF number.
So the greatest common factor 816 and 821 is 1.

Also check out the Least Common Multiple of 816 and 821

Properties of GCF 816 and 821

(i) The GCF of 816 and 821 is associative

GCF of 816 and 821 = GCF of 821 and 816

Related Greatest Common Factor of 816

Related Greatest Common Factor of 821

Frequently Asked Questions on GCF of 816 and 821

1. What is the GCF of 816 and 821?

Answer: GCF of 816 and 821 is 1.

2. What are the Factors of 816?

Answer: Factors of 816 are 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816. There are 20 integers that are factors of 816. The greatest factor of 816 is 816.

3. What are the Factors of 821?

Answer: Factors of 821 are 1, 821. There are 2 integers that are factors of 821. The greatest factor of 821 is 821.

4. How to Find the GCF of 816 and 821?

Answer:

Greatest Common Factor of 816 and 821 = 1

Step 1: Find the prime factorization of 816

816 = 2 x 2 x 2 x 2 x 3 x 17

Step 2: Find the prime factorization of 821

821 = 821

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 816 and 821 is 1