Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 54 and 57 the smallest integer that is 1026 that is divisible by both numbers.
Least Common Multiple (LCM) of 54 and 57 is 1026.
LCM(54,57) = 1026
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 54 and 57. First we will calculate the prime factors of 54 and 57.
Prime Factorization of 54
2 | 54 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 54 are 2,3. Prime factorization of 54 in exponential form is:
54 = 21×33
Prime Factorization of 57
3 | 57 |
19 | 19 |
1 |
Prime factors of 57 are 3,19. Prime factorization of 57 in exponential form is:
57 = 31×191
Now multiplying the highest exponent prime factors to calculate the LCM of 54 and 57.
LCM(54,57) = 21×33×191
LCM(54,57) = 1026
Factors of 54
List of positive integer factors of 54 that divides 54 without a remainder.
1, 2, 3, 6, 9, 18, 27, 54
Factors of 57
List of positive integer factors of 57 that divides 57 without a remainder.
1, 3, 19, 57
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 54 and 57, than apply into the LCM equation.
GCF(54,57) = 3
LCM(54,57) = ( 54 × 57) / 3
LCM(54,57) = 3078 / 3
LCM(54,57) = 1026
(i) The LCM of 57 and 54 is associative
LCM of 54 and 57 = LCM of 57 and 54
1. What is the LCM of 54 and 57?
Answer: LCM of 54 and 57 is 1026.
2. What are the Factors of 54?
Answer: Factors of 54 are 1, 2, 3, 6, 9, 18, 27, 54. There are 8 integers that are factors of 54. The greatest factor of 54 is 54.
3. What are the Factors of 57?
Answer: Factors of 57 are 1, 3, 19, 57. There are 4 integers that are factors of 57. The greatest factor of 57 is 57.
4. How to Find the LCM of 54 and 57?
Answer:
Least Common Multiple of 54 and 57 = 1026
Step 1: Find the prime factorization of 54
54 = 2 x 3 x 3 x 3
Step 2: Find the prime factorization of 57
57 = 3 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1026 = 2 x 3 x 3 x 3 x 19
Step 4: Therefore, the least common multiple of 54 and 57 is 1026.