Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2128 and 2130 the smallest integer that is 2266320 that is divisible by both numbers.
Least Common Multiple (LCM) of 2128 and 2130 is 2266320.
LCM(2128,2130) = 2266320
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 2128 and 2130. First we will calculate the prime factors of 2128 and 2130.
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
Prime Factorization of 2130
2 | 2130 |
3 | 1065 |
5 | 355 |
71 | 71 |
1 |
Prime factors of 2130 are 2, 3, 5,71. Prime factorization of 2130 in exponential form is:
2130 = 21×31×51×711
Now multiplying the highest exponent prime factors to calculate the LCM of 2128 and 2130.
LCM(2128,2130) = 24×31×51×71×191×711
LCM(2128,2130) = 2266320
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
Factors of 2130
List of positive integer factors of 2130 that divides 2130 without a remainder.
1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2128 and 2130, than apply into the LCM equation.
GCF(2128,2130) = 2
LCM(2128,2130) = ( 2128 × 2130) / 2
LCM(2128,2130) = 4532640 / 2
LCM(2128,2130) = 2266320
(i) The LCM of 2130 and 2128 is associative
LCM of 2128 and 2130 = LCM of 2130 and 2128
1. What is the LCM of 2128 and 2130?
Answer: LCM of 2128 and 2130 is 2266320.
2. 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.
3. What are the Factors of 2130?
Answer: Factors of 2130 are 1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130. There are 16 integers that are factors of 2130. The greatest factor of 2130 is 2130.
4. How to Find the LCM of 2128 and 2130?
Answer:
Least Common Multiple of 2128 and 2130 = 2266320
Step 1: Find the prime factorization of 2128
2128 = 2 x 2 x 2 x 2 x 7 x 19
Step 2: Find the prime factorization of 2130
2130 = 2 x 3 x 5 x 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2266320 = 2 x 2 x 2 x 2 x 3 x 5 x 7 x 19 x 71
Step 4: Therefore, the least common multiple of 2128 and 2130 is 2266320.