Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1395 and 1400 the smallest integer that is 390600 that is divisible by both numbers.
Least Common Multiple (LCM) of 1395 and 1400 is 390600.
LCM(1395,1400) = 390600
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 1395 and 1400. First we will calculate the prime factors of 1395 and 1400.
Prime Factorization of 1395
3 | 1395 |
3 | 465 |
5 | 155 |
31 | 31 |
1 |
Prime factors of 1395 are 3, 5,31. Prime factorization of 1395 in exponential form is:
1395 = 32×51×311
Prime Factorization of 1400
2 | 1400 |
2 | 700 |
2 | 350 |
5 | 175 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 1400 are 2, 5,7. Prime factorization of 1400 in exponential form is:
1400 = 23×52×71
Now multiplying the highest exponent prime factors to calculate the LCM of 1395 and 1400.
LCM(1395,1400) = 23×32×52×71×311
LCM(1395,1400) = 390600
Factors of 1395
List of positive integer factors of 1395 that divides 1395 without a remainder.
1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395
Factors of 1400
List of positive integer factors of 1400 that divides 1400 without a remainder.
1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 1400
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1395 and 1400, than apply into the LCM equation.
GCF(1395,1400) = 5
LCM(1395,1400) = ( 1395 × 1400) / 5
LCM(1395,1400) = 1953000 / 5
LCM(1395,1400) = 390600
(i) The LCM of 1400 and 1395 is associative
LCM of 1395 and 1400 = LCM of 1400 and 1395
1. What is the LCM of 1395 and 1400?
Answer: LCM of 1395 and 1400 is 390600.
2. What are the Factors of 1395?
Answer: Factors of 1395 are 1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395. There are 12 integers that are factors of 1395. The greatest factor of 1395 is 1395.
3. What are the Factors of 1400?
Answer: Factors of 1400 are 1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 1400. There are 24 integers that are factors of 1400. The greatest factor of 1400 is 1400.
4. How to Find the LCM of 1395 and 1400?
Answer:
Least Common Multiple of 1395 and 1400 = 390600
Step 1: Find the prime factorization of 1395
1395 = 3 x 3 x 5 x 31
Step 2: Find the prime factorization of 1400
1400 = 2 x 2 x 2 x 5 x 5 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 390600 = 2 x 2 x 2 x 3 x 3 x 5 x 5 x 7 x 31
Step 4: Therefore, the least common multiple of 1395 and 1400 is 390600.