Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 392 and 393 the smallest integer that is 154056 that is divisible by both numbers.
Least Common Multiple (LCM) of 392 and 393 is 154056.
LCM(392,393) = 154056
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 392 and 393. First we will calculate the prime factors of 392 and 393.
Prime Factorization of 392
2 | 392 |
2 | 196 |
2 | 98 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 392 are 2,7. Prime factorization of 392 in exponential form is:
392 = 23×72
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 392 and 393.
LCM(392,393) = 23×31×72×1311
LCM(392,393) = 154056
Factors of 392
List of positive integer factors of 392 that divides 392 without a remainder.
1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392
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 392 and 393, than apply into the LCM equation.
GCF(392,393) = 1
LCM(392,393) = ( 392 × 393) / 1
LCM(392,393) = 154056 / 1
LCM(392,393) = 154056
(i) The LCM of 393 and 392 is associative
LCM of 392 and 393 = LCM of 393 and 392
1. What is the LCM of 392 and 393?
Answer: LCM of 392 and 393 is 154056.
2. What are the Factors of 392?
Answer: Factors of 392 are 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392. There are 12 integers that are factors of 392. The greatest factor of 392 is 392.
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 392 and 393?
Answer:
Least Common Multiple of 392 and 393 = 154056
Step 1: Find the prime factorization of 392
392 = 2 x 2 x 2 x 7 x 7
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 = 154056 = 2 x 2 x 2 x 3 x 7 x 7 x 131
Step 4: Therefore, the least common multiple of 392 and 393 is 154056.