Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1388 and 1392 the smallest integer that is 483024 that is divisible by both numbers.
Least Common Multiple (LCM) of 1388 and 1392 is 483024.
LCM(1388,1392) = 483024
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 1388 and 1392. First we will calculate the prime factors of 1388 and 1392.
Prime Factorization of 1388
2 | 1388 |
2 | 694 |
347 | 347 |
1 |
Prime factors of 1388 are 2,347. Prime factorization of 1388 in exponential form is:
1388 = 22×3471
Prime Factorization of 1392
2 | 1392 |
2 | 696 |
2 | 348 |
2 | 174 |
3 | 87 |
29 | 29 |
1 |
Prime factors of 1392 are 2, 3,29. Prime factorization of 1392 in exponential form is:
1392 = 24×31×291
Now multiplying the highest exponent prime factors to calculate the LCM of 1388 and 1392.
LCM(1388,1392) = 24×31×291×3471
LCM(1388,1392) = 483024
Factors of 1388
List of positive integer factors of 1388 that divides 1388 without a remainder.
1, 2, 4, 347, 694, 1388
Factors of 1392
List of positive integer factors of 1392 that divides 1392 without a remainder.
1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 48, 58, 87, 116, 174, 232, 348, 464, 696, 1392
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1388 and 1392, than apply into the LCM equation.
GCF(1388,1392) = 4
LCM(1388,1392) = ( 1388 × 1392) / 4
LCM(1388,1392) = 1932096 / 4
LCM(1388,1392) = 483024
(i) The LCM of 1392 and 1388 is associative
LCM of 1388 and 1392 = LCM of 1392 and 1388
1. What is the LCM of 1388 and 1392?
Answer: LCM of 1388 and 1392 is 483024.
2. What are the Factors of 1388?
Answer: Factors of 1388 are 1, 2, 4, 347, 694, 1388. There are 6 integers that are factors of 1388. The greatest factor of 1388 is 1388.
3. What are the Factors of 1392?
Answer: Factors of 1392 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 48, 58, 87, 116, 174, 232, 348, 464, 696, 1392. There are 20 integers that are factors of 1392. The greatest factor of 1392 is 1392.
4. How to Find the LCM of 1388 and 1392?
Answer:
Least Common Multiple of 1388 and 1392 = 483024
Step 1: Find the prime factorization of 1388
1388 = 2 x 2 x 347
Step 2: Find the prime factorization of 1392
1392 = 2 x 2 x 2 x 2 x 3 x 29
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 483024 = 2 x 2 x 2 x 2 x 3 x 29 x 347
Step 4: Therefore, the least common multiple of 1388 and 1392 is 483024.