Greatest Common Factor of 5 and 7

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

• Greatest Common Factor of 5 and 7 by prime factorization method
• Greatest Common Factor of 5 and 7 by matching factors method

Prime Factorization of 5

Prime factors of 5 are 5. Prime factorization of 5 in exponential form is:

5 = 5¹

Prime Factorization of 7

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

7 = 7¹

∴ So by taking common prime factors GCF of 5 and 7 is 1

Factors of 5

List of positive integer factors of 5 that divides 5 without a remainder.

1,5

Factors of 7

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

1,7

Greatest Common Factor

We found the factors and prime factorization of 5 and 7. The biggest common factor number is the GCF number.
So the greatest common factor 5 and 7 is 1.

Also check out the Least Common Multiple of 5 and 7

(i) The GCF of 5 and 7 is associative

GCF of 5 and 7 = GCF of 7 and 5

1. What is the GCF of 5 and 7?

Answer: GCF of 5 and 7 is 1.

2. What are the Factors of 5?

Answer: Factors of 5 are 1, 5. There are 2 integers that are factors of 5. The greatest factor of 5 is 5.

3. 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.

4. How to Find the GCF of 5 and 7?

Answer:

Greatest Common Factor of 5 and 7 = 1

Step 1: Find the prime factorization of 5

5 = 5

Step 2: Find the prime factorization of 7

7 = 7

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 5 and 7 is 1