Least Common Multiple of 1809 and 1815

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Free LCM Calculator determines the least common multiple (LCM) between 1809 and 1815 the smallest integer that is 1094445 that is divisible by both numbers.

Least Common Multiple (LCM) of 1809 and 1815 is 1094445.

LCM(1809,1815) = 1094445

LCM of 1809 and 1815

Least common multiple or lowest common denominator (LCD) can be calculated in three ways;

LCM of:
and

Least Common Multiple of 1809 and 1815

LCM of 1809 and 1815 is 1094445

Least common multiple can be found by multiplying the highest exponent prime factors of 1809 and 1815. First we will calculate the prime factors of 1809 and 1815.

Prime Factorization of 1809


3 1809
3 603
3 201
67 67
1

Prime factors of 1809 are 3,67. Prime factorization of 1809 in exponential form is:

1809 = 33×671

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

Now multiplying the highest exponent prime factors to calculate the LCM of 1809 and 1815.

LCM(1809,1815) = 33×51×112×671
LCM(1809,1815) = 1094445

Factors of 1809

List of positive integer factors of 1809 that divides 1809 without a remainder.

1, 3, 9, 27, 67, 201, 603, 1809

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

Least Common Multiple of 1809 and 1815 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1809 and 1815, than apply into the LCM equation.

GCF(1809,1815) = 3
LCM(1809,1815) = ( 1809 × 1815) / 3
LCM(1809,1815) = 3283335 / 3
LCM(1809,1815) = 1094445

Properties of LCM 1809 and 1815

(i) The LCM of 1815 and 1809 is associative

LCM of 1809 and 1815 = LCM of 1815 and 1809

Related Least Common Multiples of 1809

Related Least Common Multiples of 1815

Frequently Asked Questions on LCM of 1809 and 1815

1. What is the LCM of 1809 and 1815?

Answer: LCM of 1809 and 1815 is 1094445.

2. What are the Factors of 1809?

Answer: Factors of 1809 are 1, 3, 9, 27, 67, 201, 603, 1809. There are 8 integers that are factors of 1809. The greatest factor of 1809 is 1809.

3. 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.

4. How to Find the LCM of 1809 and 1815?

Answer:

Least Common Multiple of 1809 and 1815 = 1094445

Step 1: Find the prime factorization of 1809

1809 = 3 x 3 x 3 x 67

Step 2: Find the prime factorization of 1815

1815 = 3 x 5 x 11 x 11

Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 1094445 = 3 x 3 x 3 x 5 x 11 x 11 x 67

Step 4: Therefore, the least common multiple of 1809 and 1815 is 1094445.