Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1125 and 1131 the smallest integer that is 424125 that is divisible by both numbers.
Least Common Multiple (LCM) of 1125 and 1131 is 424125.
LCM(1125,1131) = 424125
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 1125 and 1131. First we will calculate the prime factors of 1125 and 1131.
Prime Factorization of 1125
3 | 1125 |
3 | 375 |
5 | 125 |
5 | 25 |
5 | 5 |
1 |
Prime factors of 1125 are 3,5. Prime factorization of 1125 in exponential form is:
1125 = 32×53
Prime Factorization of 1131
3 | 1131 |
13 | 377 |
29 | 29 |
1 |
Prime factors of 1131 are 3, 13,29. Prime factorization of 1131 in exponential form is:
1131 = 31×131×291
Now multiplying the highest exponent prime factors to calculate the LCM of 1125 and 1131.
LCM(1125,1131) = 32×53×131×291
LCM(1125,1131) = 424125
Factors of 1125
List of positive integer factors of 1125 that divides 1125 without a remainder.
1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125
Factors of 1131
List of positive integer factors of 1131 that divides 1131 without a remainder.
1, 3, 13, 29, 39, 87, 377, 1131
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1125 and 1131, than apply into the LCM equation.
GCF(1125,1131) = 3
LCM(1125,1131) = ( 1125 × 1131) / 3
LCM(1125,1131) = 1272375 / 3
LCM(1125,1131) = 424125
(i) The LCM of 1131 and 1125 is associative
LCM of 1125 and 1131 = LCM of 1131 and 1125
1. What is the LCM of 1125 and 1131?
Answer: LCM of 1125 and 1131 is 424125.
2. What are the Factors of 1125?
Answer: Factors of 1125 are 1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125. There are 12 integers that are factors of 1125. The greatest factor of 1125 is 1125.
3. What are the Factors of 1131?
Answer: Factors of 1131 are 1, 3, 13, 29, 39, 87, 377, 1131. There are 8 integers that are factors of 1131. The greatest factor of 1131 is 1131.
4. How to Find the LCM of 1125 and 1131?
Answer:
Least Common Multiple of 1125 and 1131 = 424125
Step 1: Find the prime factorization of 1125
1125 = 3 x 3 x 5 x 5 x 5
Step 2: Find the prime factorization of 1131
1131 = 3 x 13 x 29
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 424125 = 3 x 3 x 5 x 5 x 5 x 13 x 29
Step 4: Therefore, the least common multiple of 1125 and 1131 is 424125.