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 30, 47 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 30 and 47 is 1.
GCF(30,47) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 30
2 | 30 |
3 | 15 |
5 | 5 |
1 |
Prime factors of 30 are 2,3,5. Prime factorization of 30 in exponential form is:
30 = 21×31×51
Prime Factorization of 47
47 | 47 |
1 |
Prime factors of 47 are 47. Prime factorization of 47 in exponential form is:
47 = 471
∴ So by taking common prime factors GCF of 30 and 47 is 1
Factors of 30
List of positive integer factors of 30 that divides 30 without a remainder.
1,2,3,5,6,10,15,30
Factors of 47
List of positive integer factors of 47 that divides 47 without a remainder.
1,47
Greatest Common Factor
We found the factors and prime factorization of 30 and 47. The biggest common factor number is the GCF number.
So the greatest common factor 30 and 47 is 1.
Also check out the Least Common Multiple of 30 and 47
(i) The GCF of 30 and 47 is associative
GCF of 30 and 47 = GCF of 47 and 30
1. What is the GCF of 30 and 47?
Answer: GCF of 30 and 47 is 1.
2. What are the Factors of 30?
Answer: Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30. There are 8 integers that are factors of 30. The greatest factor of 30 is 30.
3. What are the Factors of 47?
Answer: Factors of 47 are 1, 47. There are 2 integers that are factors of 47. The greatest factor of 47 is 47.
4. How to Find the GCF of 30 and 47?
Answer:
Greatest Common Factor of 30 and 47 = 1
Step 1: Find the prime factorization of 30
30 = 2 x 3 x 5
Step 2: Find the prime factorization of 47
47 = 47
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 30 and 47 is 1