Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 142 and 144 the smallest integer that is 10224 that is divisible by both numbers.
Least Common Multiple (LCM) of 142 and 144 is 10224.
LCM(142,144) = 10224
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 142 and 144. First we will calculate the prime factors of 142 and 144.
Prime Factorization of 142
2 | 142 |
71 | 71 |
1 |
Prime factors of 142 are 2,71. Prime factorization of 142 in exponential form is:
142 = 21×711
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
Now multiplying the highest exponent prime factors to calculate the LCM of 142 and 144.
LCM(142,144) = 24×32×711
LCM(142,144) = 10224
Factors of 142
List of positive integer factors of 142 that divides 142 without a remainder.
1, 2, 71, 142
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
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 142 and 144, than apply into the LCM equation.
GCF(142,144) = 2
LCM(142,144) = ( 142 × 144) / 2
LCM(142,144) = 20448 / 2
LCM(142,144) = 10224
(i) The LCM of 144 and 142 is associative
LCM of 142 and 144 = LCM of 144 and 142
1. What is the LCM of 142 and 144?
Answer: LCM of 142 and 144 is 10224.
2. What are the Factors of 142?
Answer: Factors of 142 are 1, 2, 71, 142. There are 4 integers that are factors of 142. The greatest factor of 142 is 142.
3. 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.
4. How to Find the LCM of 142 and 144?
Answer:
Least Common Multiple of 142 and 144 = 10224
Step 1: Find the prime factorization of 142
142 = 2 x 71
Step 2: Find the prime factorization of 144
144 = 2 x 2 x 2 x 2 x 3 x 3
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 10224 = 2 x 2 x 2 x 2 x 3 x 3 x 71
Step 4: Therefore, the least common multiple of 142 and 144 is 10224.