Greatest Common Factor of 661 and 664

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 661, 664 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 661 and 664 is 1.

GCF(661,664) = 1

GCF of 661 and 664

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

GCF of:
and

Greatest Common Factor of 661 and 664

GCF of 661 and 664 is 1

Prime Factorization of 661


661 661
1

Prime factors of 661 are 661. Prime factorization of 661 in exponential form is:

661 = 6611

Prime Factorization of 664


2 664
2 332
2 166
83 83
1

Prime factors of 664 are 2.Prime factorization of 664 in exponential form is:

664 = 23×831

∴ So by taking common prime factors GCF of 661 and 664 is 1

Greatest Common Factor of 661 and 664 by matching factors method

Factors of 661

List of positive integer factors of 661 that divides 661 without a remainder.

1,661

Factors of 664

List of positive integer factors of 664 that divides 664 without a remainder.

1,2,4,8,83,166,332,664

Greatest Common Factor

We found the factors and prime factorization of 661 and 664. The biggest common factor number is the GCF number.
So the greatest common factor 661 and 664 is 1.

Also check out the Least Common Multiple of 661 and 664

Properties of GCF 661 and 664

(i) The GCF of 661 and 664 is associative

GCF of 661 and 664 = GCF of 664 and 661

Related Greatest Common Factor of 661

Related Greatest Common Factor of 664

Frequently Asked Questions on GCF of 661 and 664

1. What is the GCF of 661 and 664?

Answer: GCF of 661 and 664 is 1.

2. What are the Factors of 661?

Answer: Factors of 661 are 1, 661. There are 2 integers that are factors of 661. The greatest factor of 661 is 661.

3. What are the Factors of 664?

Answer: Factors of 664 are 1, 2, 4, 8, 83, 166, 332, 664. There are 8 integers that are factors of 664. The greatest factor of 664 is 664.

4. How to Find the GCF of 661 and 664?

Answer:

Greatest Common Factor of 661 and 664 = 1

Step 1: Find the prime factorization of 661

661 = 661

Step 2: Find the prime factorization of 664

664 = 2 x 2 x 2 x 83

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 661 and 664 is 1