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 2120, 2128 i.e. 8 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 2120 and 2128 is 8.
GCF(2120,2128) = 8
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 2120
2 | 2120 |
2 | 1060 |
2 | 530 |
5 | 265 |
53 | 53 |
1 |
Prime factors of 2120 are 2,5,53. Prime factorization of 2120 in exponential form is:
2120 = 23×51×531
Prime Factorization of 2128
2 | 2128 |
2 | 1064 |
2 | 532 |
2 | 266 |
7 | 133 |
19 | 19 |
1 |
Prime factors of 2128 are 2,7,19. Prime factorization of 2128 in exponential form is:
2128 = 24×71×191
∴ So by taking common prime factors GCF of 2120 and 2128 is 8
Factors of 2120
List of positive integer factors of 2120 that divides 2120 without a remainder.
1,2,4,5,8,10,20,40,53,106,212,265,424,530,1060,2120
Factors of 2128
List of positive integer factors of 2128 that divides 2128 without a remainder.
1,2,4,7,8,14,16,19,28,38,56,76,112,133,152,266,304,532,1064,2128
Greatest Common Factor
We found the factors and prime factorization of 2120 and 2128. The biggest common factor number is the GCF number.
So the greatest common factor 2120 and 2128 is 8.
Also check out the Least Common Multiple of 2120 and 2128
(i) The GCF of 2120 and 2128 is associative
GCF of 2120 and 2128 = GCF of 2128 and 2120
1. What is the GCF of 2120 and 2128?
Answer: GCF of 2120 and 2128 is 8.
2. What are the Factors of 2120?
Answer: Factors of 2120 are 1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120. There are 16 integers that are factors of 2120. The greatest factor of 2120 is 2120.
3. What are the Factors of 2128?
Answer: Factors of 2128 are 1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128. There are 20 integers that are factors of 2128. The greatest factor of 2128 is 2128.
4. How to Find the GCF of 2120 and 2128?
Answer:
Greatest Common Factor of 2120 and 2128 = 8
Step 1: Find the prime factorization of 2120
2120 = 2 x 2 x 2 x 5 x 53
Step 2: Find the prime factorization of 2128
2128 = 2 x 2 x 2 x 2 x 7 x 19
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2 x 2 x 2 = 8
Step 4: Therefore, the greatest common factor of 2120 and 2128 is 8