Greatest Common Factor of 7 and 15

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 7, 15 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 7 and 15 is 1.

GCF(7,15) = 1

GCF of 7 and 15

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

GCF of:
and

Greatest Common Factor of 7 and 15

GCF of 7 and 15 is 1

Prime Factorization of 7


7 7
1

Prime factors of 7 are 7. Prime factorization of 7 in exponential form is:

7 = 71

Prime Factorization of 15


3 15
5 5
1

Prime factors of 15 are 3.Prime factorization of 15 in exponential form is:

15 = 31×51

∴ So by taking common prime factors GCF of 7 and 15 is 1

Greatest Common Factor of 7 and 15 by matching factors method

Factors of 7

List of positive integer factors of 7 that divides 7 without a remainder.

1,7

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Greatest Common Factor

We found the factors and prime factorization of 7 and 15. The biggest common factor number is the GCF number.
So the greatest common factor 7 and 15 is 1.

Also check out the Least Common Multiple of 7 and 15

Properties of GCF 7 and 15

(i) The GCF of 7 and 15 is associative

GCF of 7 and 15 = GCF of 15 and 7

Related Greatest Common Factor of 7

Related Greatest Common Factor of 15

Frequently Asked Questions on GCF of 7 and 15

1. What is the GCF of 7 and 15?

Answer: GCF of 7 and 15 is 1.

2. What are the Factors of 7?

Answer: Factors of 7 are 1, 7. There are 2 integers that are factors of 7. The greatest factor of 7 is 7.

3. What are the Factors of 15?

Answer: Factors of 15 are 1, 3, 5, 15. There are 4 integers that are factors of 15. The greatest factor of 15 is 15.

4. How to Find the GCF of 7 and 15?

Answer:

Greatest Common Factor of 7 and 15 = 1

Step 1: Find the prime factorization of 7

7 = 7

Step 2: Find the prime factorization of 15

15 = 3 x 5

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 7 and 15 is 1