Greatest Common Factor of 81 and 89

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 81, 89 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 81 and 89 is 1.

GCF(81,89) = 1

GCF of 81 and 89

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

GCF of:
and

Greatest Common Factor of 81 and 89

GCF of 81 and 89 is 1

Prime Factorization of 81


3 81
3 27
3 9
3 3
1

Prime factors of 81 are 3. Prime factorization of 81 in exponential form is:

81 = 34

Prime Factorization of 89


89 89
1

Prime factors of 89 are 89.Prime factorization of 89 in exponential form is:

89 = 891

∴ So by taking common prime factors GCF of 81 and 89 is 1

Greatest Common Factor of 81 and 89 by matching factors method

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Greatest Common Factor

We found the factors and prime factorization of 81 and 89. The biggest common factor number is the GCF number.
So the greatest common factor 81 and 89 is 1.

Also check out the Least Common Multiple of 81 and 89

Properties of GCF 81 and 89

(i) The GCF of 81 and 89 is associative

GCF of 81 and 89 = GCF of 89 and 81

Related Greatest Common Factor of 81

Related Greatest Common Factor of 89

Frequently Asked Questions on GCF of 81 and 89

1. What is the GCF of 81 and 89?

Answer: GCF of 81 and 89 is 1.

2. What are the Factors of 81?

Answer: Factors of 81 are 1, 3, 9, 27, 81. There are 5 integers that are factors of 81. The greatest factor of 81 is 81.

3. What are the Factors of 89?

Answer: Factors of 89 are 1, 89. There are 2 integers that are factors of 89. The greatest factor of 89 is 89.

4. How to Find the GCF of 81 and 89?

Answer:

Greatest Common Factor of 81 and 89 = 1

Step 1: Find the prime factorization of 81

81 = 3 x 3 x 3 x 3

Step 2: Find the prime factorization of 89

89 = 89

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 81 and 89 is 1