Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 261 and 265 the smallest integer that is 69165 that is divisible by both numbers.
Least Common Multiple (LCM) of 261 and 265 is 69165.
LCM(261,265) = 69165
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 261 and 265. First we will calculate the prime factors of 261 and 265.
Prime Factorization of 261
3 | 261 |
3 | 87 |
29 | 29 |
1 |
Prime factors of 261 are 3,29. Prime factorization of 261 in exponential form is:
261 = 32×291
Prime Factorization of 265
5 | 265 |
53 | 53 |
1 |
Prime factors of 265 are 5,53. Prime factorization of 265 in exponential form is:
265 = 51×531
Now multiplying the highest exponent prime factors to calculate the LCM of 261 and 265.
LCM(261,265) = 32×51×291×531
LCM(261,265) = 69165
Factors of 261
List of positive integer factors of 261 that divides 261 without a remainder.
1, 3, 9, 29, 87, 261
Factors of 265
List of positive integer factors of 265 that divides 265 without a remainder.
1, 5, 53, 265
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 261 and 265, than apply into the LCM equation.
GCF(261,265) = 1
LCM(261,265) = ( 261 × 265) / 1
LCM(261,265) = 69165 / 1
LCM(261,265) = 69165
(i) The LCM of 265 and 261 is associative
LCM of 261 and 265 = LCM of 265 and 261
1. What is the LCM of 261 and 265?
Answer: LCM of 261 and 265 is 69165.
2. What are the Factors of 261?
Answer: Factors of 261 are 1, 3, 9, 29, 87, 261. There are 6 integers that are factors of 261. The greatest factor of 261 is 261.
3. What are the Factors of 265?
Answer: Factors of 265 are 1, 5, 53, 265. There are 4 integers that are factors of 265. The greatest factor of 265 is 265.
4. How to Find the LCM of 261 and 265?
Answer:
Least Common Multiple of 261 and 265 = 69165
Step 1: Find the prime factorization of 261
261 = 3 x 3 x 29
Step 2: Find the prime factorization of 265
265 = 5 x 53
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 69165 = 3 x 3 x 5 x 29 x 53
Step 4: Therefore, the least common multiple of 261 and 265 is 69165.