Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 189 and 192 the smallest integer that is 12096 that is divisible by both numbers.
Least Common Multiple (LCM) of 189 and 192 is 12096.
LCM(189,192) = 12096
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 189 and 192. First we will calculate the prime factors of 189 and 192.
Prime Factorization of 189
3 | 189 |
3 | 63 |
3 | 21 |
7 | 7 |
1 |
Prime factors of 189 are 3,7. Prime factorization of 189 in exponential form is:
189 = 33×71
Prime Factorization of 192
2 | 192 |
2 | 96 |
2 | 48 |
2 | 24 |
2 | 12 |
2 | 6 |
3 | 3 |
1 |
Prime factors of 192 are 2,3. Prime factorization of 192 in exponential form is:
192 = 26×31
Now multiplying the highest exponent prime factors to calculate the LCM of 189 and 192.
LCM(189,192) = 26×33×71
LCM(189,192) = 12096
Factors of 189
List of positive integer factors of 189 that divides 189 without a remainder.
1, 3, 7, 9, 21, 27, 63, 189
Factors of 192
List of positive integer factors of 192 that divides 192 without a remainder.
1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 189 and 192, than apply into the LCM equation.
GCF(189,192) = 3
LCM(189,192) = ( 189 × 192) / 3
LCM(189,192) = 36288 / 3
LCM(189,192) = 12096
(i) The LCM of 192 and 189 is associative
LCM of 189 and 192 = LCM of 192 and 189
1. What is the LCM of 189 and 192?
Answer: LCM of 189 and 192 is 12096.
2. What are the Factors of 189?
Answer: Factors of 189 are 1, 3, 7, 9, 21, 27, 63, 189. There are 8 integers that are factors of 189. The greatest factor of 189 is 189.
3. What are the Factors of 192?
Answer: Factors of 192 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192. There are 14 integers that are factors of 192. The greatest factor of 192 is 192.
4. How to Find the LCM of 189 and 192?
Answer:
Least Common Multiple of 189 and 192 = 12096
Step 1: Find the prime factorization of 189
189 = 3 x 3 x 3 x 7
Step 2: Find the prime factorization of 192
192 = 2 x 2 x 2 x 2 x 2 x 2 x 3
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 12096 = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 7
Step 4: Therefore, the least common multiple of 189 and 192 is 12096.