Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 12315 and 12321 the smallest integer that is 50577705 that is divisible by both numbers.
Least Common Multiple (LCM) of 12315 and 12321 is 50577705.
LCM(12315,12321) = 50577705
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 12315 and 12321. First we will calculate the prime factors of 12315 and 12321.
Prime Factorization of 12315
3 | 12315 |
5 | 4105 |
821 | 821 |
1 |
Prime factors of 12315 are 3, 5,821. Prime factorization of 12315 in exponential form is:
12315 = 31×51×8211
Prime Factorization of 12321
3 | 12321 |
3 | 4107 |
37 | 1369 |
37 | 37 |
1 |
Prime factors of 12321 are 3,37. Prime factorization of 12321 in exponential form is:
12321 = 32×372
Now multiplying the highest exponent prime factors to calculate the LCM of 12315 and 12321.
LCM(12315,12321) = 32×51×372×8211
LCM(12315,12321) = 50577705
Factors of 12315
List of positive integer factors of 12315 that divides 12315 without a remainder.
1, 3, 5, 15, 821, 2463, 4105, 12315
Factors of 12321
List of positive integer factors of 12321 that divides 12321 without a remainder.
1, 3, 9, 37, 111, 333, 1369, 4107, 12321
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12315 and 12321, than apply into the LCM equation.
GCF(12315,12321) = 3
LCM(12315,12321) = ( 12315 × 12321) / 3
LCM(12315,12321) = 151733115 / 3
LCM(12315,12321) = 50577705
(i) The LCM of 12321 and 12315 is associative
LCM of 12315 and 12321 = LCM of 12321 and 12315
1. What is the LCM of 12315 and 12321?
Answer: LCM of 12315 and 12321 is 50577705.
2. What are the Factors of 12315?
Answer: Factors of 12315 are 1, 3, 5, 15, 821, 2463, 4105, 12315. There are 8 integers that are factors of 12315. The greatest factor of 12315 is 12315.
3. What are the Factors of 12321?
Answer: Factors of 12321 are 1, 3, 9, 37, 111, 333, 1369, 4107, 12321. There are 9 integers that are factors of 12321. The greatest factor of 12321 is 12321.
4. How to Find the LCM of 12315 and 12321?
Answer:
Least Common Multiple of 12315 and 12321 = 50577705
Step 1: Find the prime factorization of 12315
12315 = 3 x 5 x 821
Step 2: Find the prime factorization of 12321
12321 = 3 x 3 x 37 x 37
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 50577705 = 3 x 3 x 5 x 37 x 37 x 821
Step 4: Therefore, the least common multiple of 12315 and 12321 is 50577705.