Greatest Common Factor of 2015 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 2015, 2021 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 2015 and 2021 is 1.
GCF(2015,2021) = 1
GCF of 2015 and 2021
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
- Greatest Common Factor of 2015 and 2021 by prime factorization method
- Greatest Common Factor of 2015 and 2021 by matching factors method
GCF of 2015 and 2021 is 1
Prime Factorization of 2015
| 5 | 2015 |
| 13 | 403 |
| 31 | 31 |
| 1 |
Prime factors of 2015 are 5,13,31. Prime factorization of 2015 in exponential form is:
2015 = 51×131×311
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 2015 and 2021 is 1
Greatest Common Factor of 2015 and 2021 by matching factors method
Factors of 2015
List of positive integer factors of 2015 that divides 2015 without a remainder.
1,5,13,31,65,155,403,2015
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 2015 and 2021. The biggest common factor number is the GCF number.
So the greatest common factor 2015 and 2021 is 1.
Also check out the Least Common Multiple of 2015 and 2021
Properties of GCF 2015 and 2021
(i) The GCF of 2015 and 2021 is associative
GCF of 2015 and 2021 = GCF of 2021 and 2015
Related Greatest Common Factor of 2015
Related Greatest Common Factor of 2021
Frequently Asked Questions on GCF of 2015 and 2021
1. What is the GCF of 2015 and 2021?
Answer: GCF of 2015 and 2021 is 1.
2. What are the Factors of 2015?
Answer: Factors of 2015 are 1, 5, 13, 31, 65, 155, 403, 2015. There are 8 integers that are factors of 2015. The greatest factor of 2015 is 2015.
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 2015 and 2021?
Answer:
Greatest Common Factor of 2015 and 2021 = 1
Step 1: Find the prime factorization of 2015
2015 = 5 x 13 x 31
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 2015 and 2021 is 1
