Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 144 and 147 the smallest integer that is 7056 that is divisible by both numbers.
Least Common Multiple (LCM) of 144 and 147 is 7056.
LCM(144,147) = 7056
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 144 and 147. First we will calculate the prime factors of 144 and 147.
Prime Factorization of 144
2 | 144 |
2 | 72 |
2 | 36 |
2 | 18 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 144 are 2,3. Prime factorization of 144 in exponential form is:
144 = 24×32
Prime Factorization of 147
3 | 147 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 147 are 3,7. Prime factorization of 147 in exponential form is:
147 = 31×72
Now multiplying the highest exponent prime factors to calculate the LCM of 144 and 147.
LCM(144,147) = 24×32×72
LCM(144,147) = 7056
Factors of 144
List of positive integer factors of 144 that divides 144 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
Factors of 147
List of positive integer factors of 147 that divides 147 without a remainder.
1, 3, 7, 21, 49, 147
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 144 and 147, than apply into the LCM equation.
GCF(144,147) = 3
LCM(144,147) = ( 144 × 147) / 3
LCM(144,147) = 21168 / 3
LCM(144,147) = 7056
(i) The LCM of 147 and 144 is associative
LCM of 144 and 147 = LCM of 147 and 144
1. What is the LCM of 144 and 147?
Answer: LCM of 144 and 147 is 7056.
2. What are the Factors of 144?
Answer: Factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144. There are 15 integers that are factors of 144. The greatest factor of 144 is 144.
3. What are the Factors of 147?
Answer: Factors of 147 are 1, 3, 7, 21, 49, 147. There are 6 integers that are factors of 147. The greatest factor of 147 is 147.
4. How to Find the LCM of 144 and 147?
Answer:
Least Common Multiple of 144 and 147 = 7056
Step 1: Find the prime factorization of 144
144 = 2 x 2 x 2 x 2 x 3 x 3
Step 2: Find the prime factorization of 147
147 = 3 x 7 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7056 = 2 x 2 x 2 x 2 x 3 x 3 x 7 x 7
Step 4: Therefore, the least common multiple of 144 and 147 is 7056.