Greatest Common Factor of 399 and 407

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 399, 407 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 399 and 407 is 1.

GCF(399,407) = 1

GCF of 399 and 407

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

GCF of:
and

Greatest Common Factor of 399 and 407

GCF of 399 and 407 is 1

Prime Factorization of 399


3 399
7 133
19 19
1

Prime factors of 399 are 3,7,19. Prime factorization of 399 in exponential form is:

399 = 31×71×191

Prime Factorization of 407


11 407
37 37
1

Prime factors of 407 are 11,37. Prime factorization of 407 in exponential form is:

407 = 111×371

∴ So by taking common prime factors GCF of 399 and 407 is 1

Greatest Common Factor of 399 and 407 by matching factors method

Factors of 399

List of positive integer factors of 399 that divides 399 without a remainder.

1,3,7,19,21,57,133,399

Factors of 407

List of positive integer factors of 407 that divides 407 without a remainder.

1,11,37,407

Greatest Common Factor

We found the factors and prime factorization of 399 and 407. The biggest common factor number is the GCF number.
So the greatest common factor 399 and 407 is 1.

Also check out the Least Common Multiple of 399 and 407

Properties of GCF 399 and 407

(i) The GCF of 399 and 407 is associative

GCF of 399 and 407 = GCF of 407 and 399

Related Greatest Common Factor of 399

Related Greatest Common Factor of 407

Frequently Asked Questions on GCF of 399 and 407

1. What is the GCF of 399 and 407?

Answer: GCF of 399 and 407 is 1.

2. What are the Factors of 399?

Answer: Factors of 399 are 1, 3, 7, 19, 21, 57, 133, 399. There are 8 integers that are factors of 399. The greatest factor of 399 is 399.

3. What are the Factors of 407?

Answer: Factors of 407 are 1, 11, 37, 407. There are 4 integers that are factors of 407. The greatest factor of 407 is 407.

4. How to Find the GCF of 399 and 407?

Answer:

Greatest Common Factor of 399 and 407 = 1

Step 1: Find the prime factorization of 399

399 = 3 x 7 x 19

Step 2: Find the prime factorization of 407

407 = 11 x 37

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 399 and 407 is 1