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, 9 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 4 and 9 is 1.
GCF(4,9) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
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 9
3 | 9 |
3 | 3 |
1 |
Prime factors of 9 are 3.Prime factorization of 9 in exponential form is:
9 = 32
∴ So by taking common prime factors GCF of 4 and 9 is 1
Factors of 4
List of positive integer factors of 4 that divides 4 without a remainder.
1,2,4
Factors of 9
List of positive integer factors of 9 that divides 9 without a remainder.
1,3,9
Greatest Common Factor
We found the factors and prime factorization of 4 and 9. The biggest common factor number is the GCF number.
So the greatest common factor 4 and 9 is 1.
Also check out the Least Common Multiple of 4 and 9
(i) The GCF of 4 and 9 is associative
GCF of 4 and 9 = GCF of 9 and 4
1. What is the GCF of 4 and 9?
Answer: GCF of 4 and 9 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 9?
Answer: Factors of 9 are 1, 3, 9. There are 3 integers that are factors of 9. The greatest factor of 9 is 9.
4. How to Find the GCF of 4 and 9?
Answer:
Greatest Common Factor of 4 and 9 = 1
Step 1: Find the prime factorization of 4
4 = 2 x 2
Step 2: Find the prime factorization of 9
9 = 3 x 3
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 9 is 1