Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 155 and 158 the smallest integer that is 24490 that is divisible by both numbers.
Least Common Multiple (LCM) of 155 and 158 is 24490.
LCM(155,158) = 24490
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 155 and 158. First we will calculate the prime factors of 155 and 158.
Prime Factorization of 155
5 | 155 |
31 | 31 |
1 |
Prime factors of 155 are 5,31. Prime factorization of 155 in exponential form is:
155 = 51×311
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 155 and 158.
LCM(155,158) = 21×51×311×791
LCM(155,158) = 24490
Factors of 155
List of positive integer factors of 155 that divides 155 without a remainder.
1, 5, 31, 155
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 155 and 158, than apply into the LCM equation.
GCF(155,158) = 1
LCM(155,158) = ( 155 × 158) / 1
LCM(155,158) = 24490 / 1
LCM(155,158) = 24490
(i) The LCM of 158 and 155 is associative
LCM of 155 and 158 = LCM of 158 and 155
1. What is the LCM of 155 and 158?
Answer: LCM of 155 and 158 is 24490.
2. What are the Factors of 155?
Answer: Factors of 155 are 1, 5, 31, 155. There are 4 integers that are factors of 155. The greatest factor of 155 is 155.
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 155 and 158?
Answer:
Least Common Multiple of 155 and 158 = 24490
Step 1: Find the prime factorization of 155
155 = 5 x 31
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 = 24490 = 2 x 5 x 31 x 79
Step 4: Therefore, the least common multiple of 155 and 158 is 24490.