Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 161 and 165 the smallest integer that is 26565 that is divisible by both numbers.
Least Common Multiple (LCM) of 161 and 165 is 26565.
LCM(161,165) = 26565
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 161 and 165. First we will calculate the prime factors of 161 and 165.
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
Prime Factorization of 165
3 | 165 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 165 are 3, 5,11. Prime factorization of 165 in exponential form is:
165 = 31×51×111
Now multiplying the highest exponent prime factors to calculate the LCM of 161 and 165.
LCM(161,165) = 31×51×71×111×231
LCM(161,165) = 26565
Factors of 161
List of positive integer factors of 161 that divides 161 without a remainder.
1, 7, 23, 161
Factors of 165
List of positive integer factors of 165 that divides 165 without a remainder.
1, 3, 5, 11, 15, 33, 55, 165
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 161 and 165, than apply into the LCM equation.
GCF(161,165) = 1
LCM(161,165) = ( 161 × 165) / 1
LCM(161,165) = 26565 / 1
LCM(161,165) = 26565
(i) The LCM of 165 and 161 is associative
LCM of 161 and 165 = LCM of 165 and 161
1. What is the LCM of 161 and 165?
Answer: LCM of 161 and 165 is 26565.
2. 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.
3. What are the Factors of 165?
Answer: Factors of 165 are 1, 3, 5, 11, 15, 33, 55, 165. There are 8 integers that are factors of 165. The greatest factor of 165 is 165.
4. How to Find the LCM of 161 and 165?
Answer:
Least Common Multiple of 161 and 165 = 26565
Step 1: Find the prime factorization of 161
161 = 7 x 23
Step 2: Find the prime factorization of 165
165 = 3 x 5 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 26565 = 3 x 5 x 7 x 11 x 23
Step 4: Therefore, the least common multiple of 161 and 165 is 26565.