Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 132 and 138 the smallest integer that is 3036 that is divisible by both numbers.
Least Common Multiple (LCM) of 132 and 138 is 3036.
LCM(132,138) = 3036
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 132 and 138. First we will calculate the prime factors of 132 and 138.
Prime Factorization of 132
2 | 132 |
2 | 66 |
3 | 33 |
11 | 11 |
1 |
Prime factors of 132 are 2, 3,11. Prime factorization of 132 in exponential form is:
132 = 22×31×111
Prime Factorization of 138
2 | 138 |
3 | 69 |
23 | 23 |
1 |
Prime factors of 138 are 2, 3,23. Prime factorization of 138 in exponential form is:
138 = 21×31×231
Now multiplying the highest exponent prime factors to calculate the LCM of 132 and 138.
LCM(132,138) = 22×31×111×231
LCM(132,138) = 3036
Factors of 132
List of positive integer factors of 132 that divides 132 without a remainder.
1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132
Factors of 138
List of positive integer factors of 138 that divides 138 without a remainder.
1, 2, 3, 6, 23, 46, 69, 138
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 132 and 138, than apply into the LCM equation.
GCF(132,138) = 6
LCM(132,138) = ( 132 × 138) / 6
LCM(132,138) = 18216 / 6
LCM(132,138) = 3036
(i) The LCM of 138 and 132 is associative
LCM of 132 and 138 = LCM of 138 and 132
1. What is the LCM of 132 and 138?
Answer: LCM of 132 and 138 is 3036.
2. What are the Factors of 132?
Answer: Factors of 132 are 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132. There are 12 integers that are factors of 132. The greatest factor of 132 is 132.
3. What are the Factors of 138?
Answer: Factors of 138 are 1, 2, 3, 6, 23, 46, 69, 138. There are 8 integers that are factors of 138. The greatest factor of 138 is 138.
4. How to Find the LCM of 132 and 138?
Answer:
Least Common Multiple of 132 and 138 = 3036
Step 1: Find the prime factorization of 132
132 = 2 x 2 x 3 x 11
Step 2: Find the prime factorization of 138
138 = 2 x 3 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3036 = 2 x 2 x 3 x 11 x 23
Step 4: Therefore, the least common multiple of 132 and 138 is 3036.