Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 387 and 393 the smallest integer that is 50697 that is divisible by both numbers.
Least Common Multiple (LCM) of 387 and 393 is 50697.
LCM(387,393) = 50697
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 387 and 393. First we will calculate the prime factors of 387 and 393.
Prime Factorization of 387
3 | 387 |
3 | 129 |
43 | 43 |
1 |
Prime factors of 387 are 3,43. Prime factorization of 387 in exponential form is:
387 = 32×431
Prime Factorization of 393
3 | 393 |
131 | 131 |
1 |
Prime factors of 393 are 3,131. Prime factorization of 393 in exponential form is:
393 = 31×1311
Now multiplying the highest exponent prime factors to calculate the LCM of 387 and 393.
LCM(387,393) = 32×431×1311
LCM(387,393) = 50697
Factors of 387
List of positive integer factors of 387 that divides 387 without a remainder.
1, 3, 9, 43, 129, 387
Factors of 393
List of positive integer factors of 393 that divides 393 without a remainder.
1, 3, 131, 393
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 387 and 393, than apply into the LCM equation.
GCF(387,393) = 3
LCM(387,393) = ( 387 × 393) / 3
LCM(387,393) = 152091 / 3
LCM(387,393) = 50697
(i) The LCM of 393 and 387 is associative
LCM of 387 and 393 = LCM of 393 and 387
1. What is the LCM of 387 and 393?
Answer: LCM of 387 and 393 is 50697.
2. What are the Factors of 387?
Answer: Factors of 387 are 1, 3, 9, 43, 129, 387. There are 6 integers that are factors of 387. The greatest factor of 387 is 387.
3. What are the Factors of 393?
Answer: Factors of 393 are 1, 3, 131, 393. There are 4 integers that are factors of 393. The greatest factor of 393 is 393.
4. How to Find the LCM of 387 and 393?
Answer:
Least Common Multiple of 387 and 393 = 50697
Step 1: Find the prime factorization of 387
387 = 3 x 3 x 43
Step 2: Find the prime factorization of 393
393 = 3 x 131
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 50697 = 3 x 3 x 43 x 131
Step 4: Therefore, the least common multiple of 387 and 393 is 50697.