Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 153 and 161 the smallest integer that is 24633 that is divisible by both numbers.
Least Common Multiple (LCM) of 153 and 161 is 24633.
LCM(153,161) = 24633
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 153 and 161. First we will calculate the prime factors of 153 and 161.
Prime Factorization of 153
3 | 153 |
3 | 51 |
17 | 17 |
1 |
Prime factors of 153 are 3,17. Prime factorization of 153 in exponential form is:
153 = 32×171
Prime Factorization of 161
7 | 161 |
23 | 23 |
1 |
Prime factors of 161 are 7,23. Prime factorization of 161 in exponential form is:
161 = 71×231
Now multiplying the highest exponent prime factors to calculate the LCM of 153 and 161.
LCM(153,161) = 32×71×171×231
LCM(153,161) = 24633
Factors of 153
List of positive integer factors of 153 that divides 153 without a remainder.
1, 3, 9, 17, 51, 153
Factors of 161
List of positive integer factors of 161 that divides 161 without a remainder.
1, 7, 23, 161
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 153 and 161, than apply into the LCM equation.
GCF(153,161) = 1
LCM(153,161) = ( 153 × 161) / 1
LCM(153,161) = 24633 / 1
LCM(153,161) = 24633
(i) The LCM of 161 and 153 is associative
LCM of 153 and 161 = LCM of 161 and 153
1. What is the LCM of 153 and 161?
Answer: LCM of 153 and 161 is 24633.
2. What are the Factors of 153?
Answer: Factors of 153 are 1, 3, 9, 17, 51, 153. There are 6 integers that are factors of 153. The greatest factor of 153 is 153.
3. What are the Factors of 161?
Answer: Factors of 161 are 1, 7, 23, 161. There are 4 integers that are factors of 161. The greatest factor of 161 is 161.
4. How to Find the LCM of 153 and 161?
Answer:
Least Common Multiple of 153 and 161 = 24633
Step 1: Find the prime factorization of 153
153 = 3 x 3 x 17
Step 2: Find the prime factorization of 161
161 = 7 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 24633 = 3 x 3 x 7 x 17 x 23
Step 4: Therefore, the least common multiple of 153 and 161 is 24633.