Greatest Common Factor of 40 and 51

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 40, 51 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 40 and 51 is 1.

GCF(40,51) = 1

GCF of 40 and 51

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

GCF of:
and

Greatest Common Factor of 40 and 51

GCF of 40 and 51 is 1

Prime Factorization of 40


2 40
2 20
2 10
5 5
1

Prime factors of 40 are 2,5. Prime factorization of 40 in exponential form is:

40 = 23×51

Prime Factorization of 51


3 51
17 17
1

Prime factors of 51 are 3,17. Prime factorization of 51 in exponential form is:

51 = 31×171

∴ So by taking common prime factors GCF of 40 and 51 is 1

Greatest Common Factor of 40 and 51 by matching factors method

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Greatest Common Factor

We found the factors and prime factorization of 40 and 51. The biggest common factor number is the GCF number.
So the greatest common factor 40 and 51 is 1.

Also check out the Least Common Multiple of 40 and 51

Properties of GCF 40 and 51

(i) The GCF of 40 and 51 is associative

GCF of 40 and 51 = GCF of 51 and 40

Frequently Asked Questions on GCF of 40 and 51

1. What is the GCF of 40 and 51?

Answer: GCF of 40 and 51 is 1.

2. What are the Factors of 40?

Answer: Factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40. There are 8 integers that are factors of 40. The greatest factor of 40 is 40.

3. What are the Factors of 51?

Answer: Factors of 51 are 1, 3, 17, 51. There are 4 integers that are factors of 51. The greatest factor of 51 is 51.

4. How to Find the GCF of 40 and 51?

Answer:

Greatest Common Factor of 40 and 51 = 1

Step 1: Find the prime factorization of 40

40 = 2 x 2 x 2 x 5

Step 2: Find the prime factorization of 51

51 = 3 x 17

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 40 and 51 is 1