Greatest Common Factor of 2020 and 2021

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 2020, 2021 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 2020 and 2021 is 1.

GCF(2020,2021) = 1

GCF of 2020 and 2021

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

GCF of:
and

Greatest Common Factor of 2020 and 2021

GCF of 2020 and 2021 is 1

Prime Factorization of 2020


2 2020
2 1010
5 505
101 101
1

Prime factors of 2020 are 2,5,101. Prime factorization of 2020 in exponential form is:

2020 = 22×51×1011

Prime Factorization of 2021


43 2021
47 47
1

Prime factors of 2021 are 43,47. Prime factorization of 2021 in exponential form is:

2021 = 431×471

∴ So by taking common prime factors GCF of 2020 and 2021 is 1

Greatest Common Factor of 2020 and 2021 by matching factors method

Factors of 2020

List of positive integer factors of 2020 that divides 2020 without a remainder.

1,2,4,5,10,20,101,202,404,505,1010,2020

Factors of 2021

List of positive integer factors of 2021 that divides 2021 without a remainder.

1,43,47,2021

Greatest Common Factor

We found the factors and prime factorization of 2020 and 2021. The biggest common factor number is the GCF number.
So the greatest common factor 2020 and 2021 is 1.

Also check out the Least Common Multiple of 2020 and 2021

Properties of GCF 2020 and 2021

(i) The GCF of 2020 and 2021 is associative

GCF of 2020 and 2021 = GCF of 2021 and 2020

Related Greatest Common Factor of 2020

Related Greatest Common Factor of 2021

Frequently Asked Questions on GCF of 2020 and 2021

1. What is the GCF of 2020 and 2021?

Answer: GCF of 2020 and 2021 is 1.

2. What are the Factors of 2020?

Answer: Factors of 2020 are 1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020. There are 12 integers that are factors of 2020. The greatest factor of 2020 is 2020.

3. What are the Factors of 2021?

Answer: Factors of 2021 are 1, 43, 47, 2021. There are 4 integers that are factors of 2021. The greatest factor of 2021 is 2021.

4. How to Find the GCF of 2020 and 2021?

Answer:

Greatest Common Factor of 2020 and 2021 = 1

Step 1: Find the prime factorization of 2020

2020 = 2 x 2 x 5 x 101

Step 2: Find the prime factorization of 2021

2021 = 43 x 47

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 2020 and 2021 is 1