Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1389 and 1396 the smallest integer that is 1939044 that is divisible by both numbers.
Least Common Multiple (LCM) of 1389 and 1396 is 1939044.
LCM(1389,1396) = 1939044
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 1389 and 1396. First we will calculate the prime factors of 1389 and 1396.
Prime Factorization of 1389
3 | 1389 |
463 | 463 |
1 |
Prime factors of 1389 are 3,463. Prime factorization of 1389 in exponential form is:
1389 = 31×4631
Prime Factorization of 1396
2 | 1396 |
2 | 698 |
349 | 349 |
1 |
Prime factors of 1396 are 2,349. Prime factorization of 1396 in exponential form is:
1396 = 22×3491
Now multiplying the highest exponent prime factors to calculate the LCM of 1389 and 1396.
LCM(1389,1396) = 22×31×3491×4631
LCM(1389,1396) = 1939044
Factors of 1389
List of positive integer factors of 1389 that divides 1389 without a remainder.
1, 3, 463, 1389
Factors of 1396
List of positive integer factors of 1396 that divides 1396 without a remainder.
1, 2, 4, 349, 698, 1396
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1389 and 1396, than apply into the LCM equation.
GCF(1389,1396) = 1
LCM(1389,1396) = ( 1389 × 1396) / 1
LCM(1389,1396) = 1939044 / 1
LCM(1389,1396) = 1939044
(i) The LCM of 1396 and 1389 is associative
LCM of 1389 and 1396 = LCM of 1396 and 1389
1. What is the LCM of 1389 and 1396?
Answer: LCM of 1389 and 1396 is 1939044.
2. What are the Factors of 1389?
Answer: Factors of 1389 are 1, 3, 463, 1389. There are 4 integers that are factors of 1389. The greatest factor of 1389 is 1389.
3. What are the Factors of 1396?
Answer: Factors of 1396 are 1, 2, 4, 349, 698, 1396. There are 6 integers that are factors of 1396. The greatest factor of 1396 is 1396.
4. How to Find the LCM of 1389 and 1396?
Answer:
Least Common Multiple of 1389 and 1396 = 1939044
Step 1: Find the prime factorization of 1389
1389 = 3 x 463
Step 2: Find the prime factorization of 1396
1396 = 2 x 2 x 349
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1939044 = 2 x 2 x 3 x 349 x 463
Step 4: Therefore, the least common multiple of 1389 and 1396 is 1939044.