Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 205 and 207 the smallest integer that is 42435 that is divisible by both numbers.
Least Common Multiple (LCM) of 205 and 207 is 42435.
LCM(205,207) = 42435
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 205 and 207. First we will calculate the prime factors of 205 and 207.
Prime Factorization of 205
5 | 205 |
41 | 41 |
1 |
Prime factors of 205 are 5,41. Prime factorization of 205 in exponential form is:
205 = 51×411
Prime Factorization of 207
3 | 207 |
3 | 69 |
23 | 23 |
1 |
Prime factors of 207 are 3,23. Prime factorization of 207 in exponential form is:
207 = 32×231
Now multiplying the highest exponent prime factors to calculate the LCM of 205 and 207.
LCM(205,207) = 32×51×231×411
LCM(205,207) = 42435
Factors of 205
List of positive integer factors of 205 that divides 205 without a remainder.
1, 5, 41, 205
Factors of 207
List of positive integer factors of 207 that divides 207 without a remainder.
1, 3, 9, 23, 69, 207
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 205 and 207, than apply into the LCM equation.
GCF(205,207) = 1
LCM(205,207) = ( 205 × 207) / 1
LCM(205,207) = 42435 / 1
LCM(205,207) = 42435
(i) The LCM of 207 and 205 is associative
LCM of 205 and 207 = LCM of 207 and 205
1. What is the LCM of 205 and 207?
Answer: LCM of 205 and 207 is 42435.
2. What are the Factors of 205?
Answer: Factors of 205 are 1, 5, 41, 205. There are 4 integers that are factors of 205. The greatest factor of 205 is 205.
3. What are the Factors of 207?
Answer: Factors of 207 are 1, 3, 9, 23, 69, 207. There are 6 integers that are factors of 207. The greatest factor of 207 is 207.
4. How to Find the LCM of 205 and 207?
Answer:
Least Common Multiple of 205 and 207 = 42435
Step 1: Find the prime factorization of 205
205 = 5 x 41
Step 2: Find the prime factorization of 207
207 = 3 x 3 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 = 42435 = 3 x 3 x 5 x 23 x 41
Step 4: Therefore, the least common multiple of 205 and 207 is 42435.