Greatest Common Factor of 489 and 491

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 489, 491 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 489 and 491 is 1.

GCF(489,491) = 1

GCF of 489 and 491

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

GCF of:
and

Greatest Common Factor of 489 and 491

GCF of 489 and 491 is 1

Prime Factorization of 489


3 489
163 163
1

Prime factors of 489 are 3,163. Prime factorization of 489 in exponential form is:

489 = 31×1631

Prime Factorization of 491


491 491
1

Prime factors of 491 are 491. Prime factorization of 491 in exponential form is:

491 = 4911

∴ So by taking common prime factors GCF of 489 and 491 is 1

Greatest Common Factor of 489 and 491 by matching factors method

Factors of 489

List of positive integer factors of 489 that divides 489 without a remainder.

1,3,163,489

Factors of 491

List of positive integer factors of 491 that divides 491 without a remainder.

1,491

Greatest Common Factor

We found the factors and prime factorization of 489 and 491. The biggest common factor number is the GCF number.
So the greatest common factor 489 and 491 is 1.

Also check out the Least Common Multiple of 489 and 491

Properties of GCF 489 and 491

(i) The GCF of 489 and 491 is associative

GCF of 489 and 491 = GCF of 491 and 489

Related Greatest Common Factor of 489

Related Greatest Common Factor of 491

Frequently Asked Questions on GCF of 489 and 491

1. What is the GCF of 489 and 491?

Answer: GCF of 489 and 491 is 1.

2. What are the Factors of 489?

Answer: Factors of 489 are 1, 3, 163, 489. There are 4 integers that are factors of 489. The greatest factor of 489 is 489.

3. What are the Factors of 491?

Answer: Factors of 491 are 1, 491. There are 2 integers that are factors of 491. The greatest factor of 491 is 491.

4. How to Find the GCF of 489 and 491?

Answer:

Greatest Common Factor of 489 and 491 = 1

Step 1: Find the prime factorization of 489

489 = 3 x 163

Step 2: Find the prime factorization of 491

491 = 491

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 489 and 491 is 1