Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1815 and 1823 the smallest integer that is 3308745 that is divisible by both numbers.
Least Common Multiple (LCM) of 1815 and 1823 is 3308745.
LCM(1815,1823) = 3308745
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 1815 and 1823. First we will calculate the prime factors of 1815 and 1823.
Prime Factorization of 1815
3 | 1815 |
5 | 605 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 1815 are 3, 5,11. Prime factorization of 1815 in exponential form is:
1815 = 31×51×112
Prime Factorization of 1823
1823 | 1823 |
1 |
Prime factors of 1823 are 1823. Prime factorization of 1823 in exponential form is:
1823 = 18231
Now multiplying the highest exponent prime factors to calculate the LCM of 1815 and 1823.
LCM(1815,1823) = 31×51×112×18231
LCM(1815,1823) = 3308745
Factors of 1815
List of positive integer factors of 1815 that divides 1815 without a remainder.
1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815
Factors of 1823
List of positive integer factors of 1823 that divides 1823 without a remainder.
1, 1823
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1815 and 1823, than apply into the LCM equation.
GCF(1815,1823) = 1
LCM(1815,1823) = ( 1815 × 1823) / 1
LCM(1815,1823) = 3308745 / 1
LCM(1815,1823) = 3308745
(i) The LCM of 1823 and 1815 is associative
LCM of 1815 and 1823 = LCM of 1823 and 1815
1. What is the LCM of 1815 and 1823?
Answer: LCM of 1815 and 1823 is 3308745.
2. What are the Factors of 1815?
Answer: Factors of 1815 are 1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815. There are 12 integers that are factors of 1815. The greatest factor of 1815 is 1815.
3. What are the Factors of 1823?
Answer: Factors of 1823 are 1, 1823. There are 2 integers that are factors of 1823. The greatest factor of 1823 is 1823.
4. How to Find the LCM of 1815 and 1823?
Answer:
Least Common Multiple of 1815 and 1823 = 3308745
Step 1: Find the prime factorization of 1815
1815 = 3 x 5 x 11 x 11
Step 2: Find the prime factorization of 1823
1823 = 1823
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3308745 = 3 x 5 x 11 x 11 x 1823
Step 4: Therefore, the least common multiple of 1815 and 1823 is 3308745.