Greatest Common Factor of 57 and 65

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 57, 65 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 57 and 65 is 1.

GCF(57,65) = 1

GCF of 57 and 65

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

GCF of:
and

Greatest Common Factor of 57 and 65

GCF of 57 and 65 is 1

Prime Factorization of 57


3 57
19 19
1

Prime factors of 57 are 3,19. Prime factorization of 57 in exponential form is:

57 = 31×191

Prime Factorization of 65


5 65
13 13
1

Prime factors of 65 are 5,13. Prime factorization of 65 in exponential form is:

65 = 51×131

∴ So by taking common prime factors GCF of 57 and 65 is 1

Greatest Common Factor of 57 and 65 by matching factors method

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Greatest Common Factor

We found the factors and prime factorization of 57 and 65. The biggest common factor number is the GCF number.
So the greatest common factor 57 and 65 is 1.

Also check out the Least Common Multiple of 57 and 65

Properties of GCF 57 and 65

(i) The GCF of 57 and 65 is associative

GCF of 57 and 65 = GCF of 65 and 57

Related Greatest Common Factor of 57

Related Greatest Common Factor of 65

Frequently Asked Questions on GCF of 57 and 65

1. What is the GCF of 57 and 65?

Answer: GCF of 57 and 65 is 1.

2. What are the Factors of 57?

Answer: Factors of 57 are 1, 3, 19, 57. There are 4 integers that are factors of 57. The greatest factor of 57 is 57.

3. What are the Factors of 65?

Answer: Factors of 65 are 1, 5, 13, 65. There are 4 integers that are factors of 65. The greatest factor of 65 is 65.

4. How to Find the GCF of 57 and 65?

Answer:

Greatest Common Factor of 57 and 65 = 1

Step 1: Find the prime factorization of 57

57 = 3 x 19

Step 2: Find the prime factorization of 65

65 = 5 x 13

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 57 and 65 is 1