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 54, 70 i.e. 2 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 54 and 70 is 2.
GCF(54,70) = 2
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 54
2 | 54 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 54 are 2,3. Prime factorization of 54 in exponential form is:
54 = 21×33
Prime Factorization of 70
2 | 70 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 70 are 2,5,7. Prime factorization of 70 in exponential form is:
70 = 21×51×71
∴ So by taking common prime factors GCF of 54 and 70 is 2
Factors of 54
List of positive integer factors of 54 that divides 54 without a remainder.
1,2,3,6,9,18,27,54
Factors of 70
List of positive integer factors of 70 that divides 70 without a remainder.
1,2,5,7,10,14,35,70
Greatest Common Factor
We found the factors and prime factorization of 54 and 70. The biggest common factor number is the GCF number.
So the greatest common factor 54 and 70 is 2.
Also check out the Least Common Multiple of 54 and 70
(i) The GCF of 54 and 70 is associative
GCF of 54 and 70 = GCF of 70 and 54
1. What is the GCF of 54 and 70?
Answer: GCF of 54 and 70 is 2.
2. What are the Factors of 54?
Answer: Factors of 54 are 1, 2, 3, 6, 9, 18, 27, 54. There are 8 integers that are factors of 54. The greatest factor of 54 is 54.
3. What are the Factors of 70?
Answer: Factors of 70 are 1, 2, 5, 7, 10, 14, 35, 70. There are 8 integers that are factors of 70. The greatest factor of 70 is 70.
4. How to Find the GCF of 54 and 70?
Answer:
Greatest Common Factor of 54 and 70 = 2
Step 1: Find the prime factorization of 54
54 = 2 x 3 x 3 x 3
Step 2: Find the prime factorization of 70
70 = 2 x 5 x 7
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2
Step 4: Therefore, the greatest common factor of 54 and 70 is 2