Greatest Common Factor of 45 and 64

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 45, 64 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 45 and 64 is 1.

GCF(45,64) = 1

GCF of 45 and 64

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

GCF of:
and

Greatest Common Factor of 45 and 64

GCF of 45 and 64 is 1

Prime Factorization of 45


3 45
3 15
5 5
1

Prime factors of 45 are 3,5. Prime factorization of 45 in exponential form is:

45 = 32×51

Prime Factorization of 64


2 64
2 32
2 16
2 8
2 4
2 2
1

Prime factors of 64 are 2. Prime factorization of 64 in exponential form is:

64 = 26

∴ So by taking common prime factors GCF of 45 and 64 is 1

Greatest Common Factor of 45 and 64 by matching factors method

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Greatest Common Factor

We found the factors and prime factorization of 45 and 64. The biggest common factor number is the GCF number.
So the greatest common factor 45 and 64 is 1.

Also check out the Least Common Multiple of 45 and 64

Properties of GCF 45 and 64

(i) The GCF of 45 and 64 is associative

GCF of 45 and 64 = GCF of 64 and 45

Frequently Asked Questions on GCF of 45 and 64

1. What is the GCF of 45 and 64?

Answer: GCF of 45 and 64 is 1.

2. What are the Factors of 45?

Answer: Factors of 45 are 1, 3, 5, 9, 15, 45. There are 6 integers that are factors of 45. The greatest factor of 45 is 45.

3. What are the Factors of 64?

Answer: Factors of 64 are 1, 2, 4, 8, 16, 32, 64. There are 7 integers that are factors of 64. The greatest factor of 64 is 64.

4. How to Find the GCF of 45 and 64?

Answer:

Greatest Common Factor of 45 and 64 = 1

Step 1: Find the prime factorization of 45

45 = 3 x 3 x 5

Step 2: Find the prime factorization of 64

64 = 2 x 2 x 2 x 2 x 2 x 2

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 45 and 64 is 1