Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1384 and 1390 the smallest integer that is 961880 that is divisible by both numbers.
Least Common Multiple (LCM) of 1384 and 1390 is 961880.
LCM(1384,1390) = 961880
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 1384 and 1390. First we will calculate the prime factors of 1384 and 1390.
Prime Factorization of 1384
2 | 1384 |
2 | 692 |
2 | 346 |
173 | 173 |
1 |
Prime factors of 1384 are 2,173. Prime factorization of 1384 in exponential form is:
1384 = 23×1731
Prime Factorization of 1390
2 | 1390 |
5 | 695 |
139 | 139 |
1 |
Prime factors of 1390 are 2, 5,139. Prime factorization of 1390 in exponential form is:
1390 = 21×51×1391
Now multiplying the highest exponent prime factors to calculate the LCM of 1384 and 1390.
LCM(1384,1390) = 23×51×1391×1731
LCM(1384,1390) = 961880
Factors of 1384
List of positive integer factors of 1384 that divides 1384 without a remainder.
1, 2, 4, 8, 173, 346, 692, 1384
Factors of 1390
List of positive integer factors of 1390 that divides 1390 without a remainder.
1, 2, 5, 10, 139, 278, 695, 1390
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1384 and 1390, than apply into the LCM equation.
GCF(1384,1390) = 2
LCM(1384,1390) = ( 1384 × 1390) / 2
LCM(1384,1390) = 1923760 / 2
LCM(1384,1390) = 961880
(i) The LCM of 1390 and 1384 is associative
LCM of 1384 and 1390 = LCM of 1390 and 1384
1. What is the LCM of 1384 and 1390?
Answer: LCM of 1384 and 1390 is 961880.
2. What are the Factors of 1384?
Answer: Factors of 1384 are 1, 2, 4, 8, 173, 346, 692, 1384. There are 8 integers that are factors of 1384. The greatest factor of 1384 is 1384.
3. What are the Factors of 1390?
Answer: Factors of 1390 are 1, 2, 5, 10, 139, 278, 695, 1390. There are 8 integers that are factors of 1390. The greatest factor of 1390 is 1390.
4. How to Find the LCM of 1384 and 1390?
Answer:
Least Common Multiple of 1384 and 1390 = 961880
Step 1: Find the prime factorization of 1384
1384 = 2 x 2 x 2 x 173
Step 2: Find the prime factorization of 1390
1390 = 2 x 5 x 139
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 961880 = 2 x 2 x 2 x 5 x 139 x 173
Step 4: Therefore, the least common multiple of 1384 and 1390 is 961880.