Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 198 and 205 the smallest integer that is 40590 that is divisible by both numbers.
Least Common Multiple (LCM) of 198 and 205 is 40590.
LCM(198,205) = 40590
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 198 and 205. First we will calculate the prime factors of 198 and 205.
Prime Factorization of 198
2 | 198 |
3 | 99 |
3 | 33 |
11 | 11 |
1 |
Prime factors of 198 are 2, 3,11. Prime factorization of 198 in exponential form is:
198 = 21×32×111
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
Now multiplying the highest exponent prime factors to calculate the LCM of 198 and 205.
LCM(198,205) = 21×32×51×111×411
LCM(198,205) = 40590
Factors of 198
List of positive integer factors of 198 that divides 198 without a remainder.
1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
Factors of 205
List of positive integer factors of 205 that divides 205 without a remainder.
1, 5, 41, 205
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 198 and 205, than apply into the LCM equation.
GCF(198,205) = 1
LCM(198,205) = ( 198 × 205) / 1
LCM(198,205) = 40590 / 1
LCM(198,205) = 40590
(i) The LCM of 205 and 198 is associative
LCM of 198 and 205 = LCM of 205 and 198
1. What is the LCM of 198 and 205?
Answer: LCM of 198 and 205 is 40590.
2. What are the Factors of 198?
Answer: Factors of 198 are 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198. There are 12 integers that are factors of 198. The greatest factor of 198 is 198.
3. 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.
4. How to Find the LCM of 198 and 205?
Answer:
Least Common Multiple of 198 and 205 = 40590
Step 1: Find the prime factorization of 198
198 = 2 x 3 x 3 x 11
Step 2: Find the prime factorization of 205
205 = 5 x 41
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 40590 = 2 x 3 x 3 x 5 x 11 x 41
Step 4: Therefore, the least common multiple of 198 and 205 is 40590.