Greatest Common Factor of 399 and 401

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

Greatest common factor (GCF) of 399 and 401 is 1.

GCF(399,401) = 1

GCF of 399 and 401

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

GCF of:
and

Greatest Common Factor of 399 and 401

GCF of 399 and 401 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 401


401 401
1

Prime factors of 401 are 401. Prime factorization of 401 in exponential form is:

401 = 4011

∴ So by taking common prime factors GCF of 399 and 401 is 1

Greatest Common Factor of 399 and 401 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 401

List of positive integer factors of 401 that divides 401 without a remainder.

1,401

Greatest Common Factor

We found the factors and prime factorization of 399 and 401. The biggest common factor number is the GCF number.
So the greatest common factor 399 and 401 is 1.

Also check out the Least Common Multiple of 399 and 401

Properties of GCF 399 and 401

(i) The GCF of 399 and 401 is associative

GCF of 399 and 401 = GCF of 401 and 399

Related Greatest Common Factor of 399

Related Greatest Common Factor of 401

Frequently Asked Questions on GCF of 399 and 401

1. What is the GCF of 399 and 401?

Answer: GCF of 399 and 401 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 401?

Answer: Factors of 401 are 1, 401. There are 2 integers that are factors of 401. The greatest factor of 401 is 401.

4. How to Find the GCF of 399 and 401?

Answer:

Greatest Common Factor of 399 and 401 = 1

Step 1: Find the prime factorization of 399

399 = 3 x 7 x 19

Step 2: Find the prime factorization of 401

401 = 401

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 401 is 1