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 149 the smallest integer that is 21456 that is divisible by both numbers.
Least Common Multiple (LCM) of 144 and 149 is 21456.
LCM(144,149) = 21456
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 149. First we will calculate the prime factors of 144 and 149.
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 149
149 | 149 |
1 |
Prime factors of 149 are 149. Prime factorization of 149 in exponential form is:
149 = 1491
Now multiplying the highest exponent prime factors to calculate the LCM of 144 and 149.
LCM(144,149) = 24×32×1491
LCM(144,149) = 21456
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 149
List of positive integer factors of 149 that divides 149 without a remainder.
1, 149
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 144 and 149, than apply into the LCM equation.
GCF(144,149) = 1
LCM(144,149) = ( 144 × 149) / 1
LCM(144,149) = 21456 / 1
LCM(144,149) = 21456
(i) The LCM of 149 and 144 is associative
LCM of 144 and 149 = LCM of 149 and 144
1. What is the LCM of 144 and 149?
Answer: LCM of 144 and 149 is 21456.
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 149?
Answer: Factors of 149 are 1, 149. There are 2 integers that are factors of 149. The greatest factor of 149 is 149.
4. How to Find the LCM of 144 and 149?
Answer:
Least Common Multiple of 144 and 149 = 21456
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 149
149 = 149
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 21456 = 2 x 2 x 2 x 2 x 3 x 3 x 149
Step 4: Therefore, the least common multiple of 144 and 149 is 21456.