Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1130 and 1138 the smallest integer that is 642970 that is divisible by both numbers.
Least Common Multiple (LCM) of 1130 and 1138 is 642970.
LCM(1130,1138) = 642970
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 1130 and 1138. First we will calculate the prime factors of 1130 and 1138.
Prime Factorization of 1130
2 | 1130 |
5 | 565 |
113 | 113 |
1 |
Prime factors of 1130 are 2, 5,113. Prime factorization of 1130 in exponential form is:
1130 = 21×51×1131
Prime Factorization of 1138
2 | 1138 |
569 | 569 |
1 |
Prime factors of 1138 are 2,569. Prime factorization of 1138 in exponential form is:
1138 = 21×5691
Now multiplying the highest exponent prime factors to calculate the LCM of 1130 and 1138.
LCM(1130,1138) = 21×51×1131×5691
LCM(1130,1138) = 642970
Factors of 1130
List of positive integer factors of 1130 that divides 1130 without a remainder.
1, 2, 5, 10, 113, 226, 565, 1130
Factors of 1138
List of positive integer factors of 1138 that divides 1138 without a remainder.
1, 2, 569, 1138
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1130 and 1138, than apply into the LCM equation.
GCF(1130,1138) = 2
LCM(1130,1138) = ( 1130 × 1138) / 2
LCM(1130,1138) = 1285940 / 2
LCM(1130,1138) = 642970
(i) The LCM of 1138 and 1130 is associative
LCM of 1130 and 1138 = LCM of 1138 and 1130
1. What is the LCM of 1130 and 1138?
Answer: LCM of 1130 and 1138 is 642970.
2. What are the Factors of 1130?
Answer: Factors of 1130 are 1, 2, 5, 10, 113, 226, 565, 1130. There are 8 integers that are factors of 1130. The greatest factor of 1130 is 1130.
3. What are the Factors of 1138?
Answer: Factors of 1138 are 1, 2, 569, 1138. There are 4 integers that are factors of 1138. The greatest factor of 1138 is 1138.
4. How to Find the LCM of 1130 and 1138?
Answer:
Least Common Multiple of 1130 and 1138 = 642970
Step 1: Find the prime factorization of 1130
1130 = 2 x 5 x 113
Step 2: Find the prime factorization of 1138
1138 = 2 x 569
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 642970 = 2 x 5 x 113 x 569
Step 4: Therefore, the least common multiple of 1130 and 1138 is 642970.