Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1128 and 1135 the smallest integer that is 1280280 that is divisible by both numbers.
Least Common Multiple (LCM) of 1128 and 1135 is 1280280.
LCM(1128,1135) = 1280280
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 1128 and 1135. First we will calculate the prime factors of 1128 and 1135.
Prime Factorization of 1128
2 | 1128 |
2 | 564 |
2 | 282 |
3 | 141 |
47 | 47 |
1 |
Prime factors of 1128 are 2, 3,47. Prime factorization of 1128 in exponential form is:
1128 = 23×31×471
Prime Factorization of 1135
5 | 1135 |
227 | 227 |
1 |
Prime factors of 1135 are 5,227. Prime factorization of 1135 in exponential form is:
1135 = 51×2271
Now multiplying the highest exponent prime factors to calculate the LCM of 1128 and 1135.
LCM(1128,1135) = 23×31×51×471×2271
LCM(1128,1135) = 1280280
Factors of 1128
List of positive integer factors of 1128 that divides 1128 without a remainder.
1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 141, 188, 282, 376, 564, 1128
Factors of 1135
List of positive integer factors of 1135 that divides 1135 without a remainder.
1, 5, 227, 1135
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1128 and 1135, than apply into the LCM equation.
GCF(1128,1135) = 1
LCM(1128,1135) = ( 1128 × 1135) / 1
LCM(1128,1135) = 1280280 / 1
LCM(1128,1135) = 1280280
(i) The LCM of 1135 and 1128 is associative
LCM of 1128 and 1135 = LCM of 1135 and 1128
1. What is the LCM of 1128 and 1135?
Answer: LCM of 1128 and 1135 is 1280280.
2. What are the Factors of 1128?
Answer: Factors of 1128 are 1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 141, 188, 282, 376, 564, 1128. There are 16 integers that are factors of 1128. The greatest factor of 1128 is 1128.
3. What are the Factors of 1135?
Answer: Factors of 1135 are 1, 5, 227, 1135. There are 4 integers that are factors of 1135. The greatest factor of 1135 is 1135.
4. How to Find the LCM of 1128 and 1135?
Answer:
Least Common Multiple of 1128 and 1135 = 1280280
Step 1: Find the prime factorization of 1128
1128 = 2 x 2 x 2 x 3 x 47
Step 2: Find the prime factorization of 1135
1135 = 5 x 227
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1280280 = 2 x 2 x 2 x 3 x 5 x 47 x 227
Step 4: Therefore, the least common multiple of 1128 and 1135 is 1280280.