Greatest Common Factor of 665 and 671

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 665, 671 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 665 and 671 is 1.

GCF(665,671) = 1

GCF of 665 and 671

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

GCF of:
and

Greatest Common Factor of 665 and 671

GCF of 665 and 671 is 1

Prime Factorization of 665


5 665
7 133
19 19
1

Prime factors of 665 are 5,7,19. Prime factorization of 665 in exponential form is:

665 = 51×71×191

Prime Factorization of 671


11 671
61 61
1

Prime factors of 671 are 11,61. Prime factorization of 671 in exponential form is:

671 = 111×611

∴ So by taking common prime factors GCF of 665 and 671 is 1

Greatest Common Factor of 665 and 671 by matching factors method

Factors of 665

List of positive integer factors of 665 that divides 665 without a remainder.

1,5,7,19,35,95,133,665

Factors of 671

List of positive integer factors of 671 that divides 671 without a remainder.

1,11,61,671

Greatest Common Factor

We found the factors and prime factorization of 665 and 671. The biggest common factor number is the GCF number.
So the greatest common factor 665 and 671 is 1.

Also check out the Least Common Multiple of 665 and 671

Properties of GCF 665 and 671

(i) The GCF of 665 and 671 is associative

GCF of 665 and 671 = GCF of 671 and 665

Related Greatest Common Factor of 665

Related Greatest Common Factor of 671

Frequently Asked Questions on GCF of 665 and 671

1. What is the GCF of 665 and 671?

Answer: GCF of 665 and 671 is 1.

2. What are the Factors of 665?

Answer: Factors of 665 are 1, 5, 7, 19, 35, 95, 133, 665. There are 8 integers that are factors of 665. The greatest factor of 665 is 665.

3. What are the Factors of 671?

Answer: Factors of 671 are 1, 11, 61, 671. There are 4 integers that are factors of 671. The greatest factor of 671 is 671.

4. How to Find the GCF of 665 and 671?

Answer:

Greatest Common Factor of 665 and 671 = 1

Step 1: Find the prime factorization of 665

665 = 5 x 7 x 19

Step 2: Find the prime factorization of 671

671 = 11 x 61

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 665 and 671 is 1