Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 154 and 158 the smallest integer that is 12166 that is divisible by both numbers.
Least Common Multiple (LCM) of 154 and 158 is 12166.
LCM(154,158) = 12166
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 154 and 158. First we will calculate the prime factors of 154 and 158.
Prime Factorization of 154
2 | 154 |
7 | 77 |
11 | 11 |
1 |
Prime factors of 154 are 2, 7,11. Prime factorization of 154 in exponential form is:
154 = 21×71×111
Prime Factorization of 158
2 | 158 |
79 | 79 |
1 |
Prime factors of 158 are 2,79. Prime factorization of 158 in exponential form is:
158 = 21×791
Now multiplying the highest exponent prime factors to calculate the LCM of 154 and 158.
LCM(154,158) = 21×71×111×791
LCM(154,158) = 12166
Factors of 154
List of positive integer factors of 154 that divides 154 without a remainder.
1, 2, 7, 11, 14, 22, 77, 154
Factors of 158
List of positive integer factors of 158 that divides 158 without a remainder.
1, 2, 79, 158
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 154 and 158, than apply into the LCM equation.
GCF(154,158) = 2
LCM(154,158) = ( 154 × 158) / 2
LCM(154,158) = 24332 / 2
LCM(154,158) = 12166
(i) The LCM of 158 and 154 is associative
LCM of 154 and 158 = LCM of 158 and 154
1. What is the LCM of 154 and 158?
Answer: LCM of 154 and 158 is 12166.
2. What are the Factors of 154?
Answer: Factors of 154 are 1, 2, 7, 11, 14, 22, 77, 154. There are 8 integers that are factors of 154. The greatest factor of 154 is 154.
3. What are the Factors of 158?
Answer: Factors of 158 are 1, 2, 79, 158. There are 4 integers that are factors of 158. The greatest factor of 158 is 158.
4. How to Find the LCM of 154 and 158?
Answer:
Least Common Multiple of 154 and 158 = 12166
Step 1: Find the prime factorization of 154
154 = 2 x 7 x 11
Step 2: Find the prime factorization of 158
158 = 2 x 79
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 12166 = 2 x 7 x 11 x 79
Step 4: Therefore, the least common multiple of 154 and 158 is 12166.