Greatest Common Factor of 4 and 19

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 4, 19 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 4 and 19 is 1.

GCF(4,19) = 1

GCF of 4 and 19

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

GCF of:
and

Greatest Common Factor of 4 and 19

GCF of 4 and 19 is 1

Prime Factorization of 4


2 4
2 2
1

Prime factors of 4 are 2. Prime factorization of 4 in exponential form is:

4 = 22

Prime Factorization of 19


19 19
1

Prime factors of 19 are 19.Prime factorization of 19 in exponential form is:

19 = 191

∴ So by taking common prime factors GCF of 4 and 19 is 1

Greatest Common Factor of 4 and 19 by matching factors method

Factors of 4

List of positive integer factors of 4 that divides 4 without a remainder.

1,2,4

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Greatest Common Factor

We found the factors and prime factorization of 4 and 19. The biggest common factor number is the GCF number.
So the greatest common factor 4 and 19 is 1.

Also check out the Least Common Multiple of 4 and 19

Properties of GCF 4 and 19

(i) The GCF of 4 and 19 is associative

GCF of 4 and 19 = GCF of 19 and 4

Related Greatest Common Factor of 4

Related Greatest Common Factor of 19

Frequently Asked Questions on GCF of 4 and 19

1. What is the GCF of 4 and 19?

Answer: GCF of 4 and 19 is 1.

2. What are the Factors of 4?

Answer: Factors of 4 are 1, 2, 4. There are 3 integers that are factors of 4. The greatest factor of 4 is 4.

3. What are the Factors of 19?

Answer: Factors of 19 are 1, 19. There are 2 integers that are factors of 19. The greatest factor of 19 is 19.

4. How to Find the GCF of 4 and 19?

Answer:

Greatest Common Factor of 4 and 19 = 1

Step 1: Find the prime factorization of 4

4 = 2 x 2

Step 2: Find the prime factorization of 19

19 = 19

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 4 and 19 is 1