Least Common Multiple of 27 and 45

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023


Free LCM Calculator determines the least common multiple (LCM) between 27 and 45 the smallest integer that is 135 that is divisible by both numbers.

Least Common Multiple (LCM) of 27 and 45 is 135.

LCM(27,45) = 135

LCM of 27 and 45

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

LCM of:
and

Least Common Multiple of 27 and 45

LCM of 27 and 45 is 135

Least common multiple can be found by multiplying the highest exponent prime factors of 27 and 45. First we will calculate the prime factors of 27 and 45.

Prime Factorization of 27


3 27
3 9
3 3
1

Prime factors of 27 are 3. Prime factorization of 27 in exponential form is:

27 = 33

Prime Factorization of 45


3 45
3 15
5 5
1

Prime factors of 45 are 3,5. Prime factorization of 45 in exponential form is:

45 = 32×51

Now multiplying the highest exponent prime factors to calculate the LCM of 27 and 45.

LCM(27,45) = 33×51
LCM(27,45) = 135

Factors of 27

List of positive integer factors of 27 that divides 27 without a remainder.

1, 3, 9, 27

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1, 3, 5, 9, 15, 45

Least Common Multiple of 27 and 45 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 27 and 45, than apply into the LCM equation.

GCF(27,45) = 9
LCM(27,45) = ( 27 × 45) / 9
LCM(27,45) = 1215 / 9
LCM(27,45) = 135

Properties of LCM 27 and 45

(i) The LCM of 45 and 27 is associative

LCM of 27 and 45 = LCM of 45 and 27

Frequently Asked Questions on LCM of 27 and 45

1. What is the LCM of 27 and 45?

Answer: LCM of 27 and 45 is 135.

2. What are the Factors of 27?

Answer: Factors of 27 are 1, 3, 9, 27. There are 4 integers that are factors of 27. The greatest factor of 27 is 27.

3. What are the Factors of 45?

Answer: Factors of 45 are 1, 3, 5, 9, 15, 45. There are 6 integers that are factors of 45. The greatest factor of 45 is 45.

4. How to Find the LCM of 27 and 45?

Answer:

Least Common Multiple of 27 and 45 = 135

Step 1: Find the prime factorization of 27

27 = 3 x 3 x 3

Step 2: Find the prime factorization of 45

45 = 3 x 3 x 5

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

LCM = 135 = 3 x 3 x 3 x 5

Step 4: Therefore, the least common multiple of 27 and 45 is 135.