Solution: The LCM of 57 and 110 is 6270
Methods
How to find the LCM of 57 and 110 using Prime Factorization
One way to find the LCM of 57 and 110 is to start by comparing the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here:
What are the Factors of 57?
What are the Factors of 110?
Here is the prime factorization of 57:
3
1
×
1
9
1
3^1 × 19^1
3 1 × 1 9 1
And this is the prime factorization of 110:
2
1
×
5
1
×
1
1
1
2^1 × 5^1 × 11^1
2 1 × 5 1 × 1 1 1
When you compare the prime factorization of these two numbers, you want to look for the highest power that each prime factor is raised to. In this case, there are these prime factors to consider: 3, 19, 2, 5, 11
2
1
×
3
1
×
5
1
×
1
1
1
×
1
9
1
=
6270
2^1 × 3^1 × 5^1 × 11^1 × 19^1 = 6270
2 1 × 3 1 × 5 1 × 1 1 1 × 1 9 1 = 6270
Through this we see that the LCM of 57 and 110 is 6270.
How to Find the LCM of 57 and 110 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 57 and 110 is to begin to list a few multiples for each number. If you need a refresher on how to find the multiples of these numbers, you can see the walkthroughs in the links below for each number.
Let’s take a look at the multiples for each of these numbers, 57 and 110:
What are the Multiples of 57?
What are the Multiples of 110?
Let’s take a look at the first 10 multiples for each of these numbers, 57 and 110:
First 10 Multiples of 57: 57, 114, 171, 228, 285, 342, 399, 456, 513, 570
First 10 Multiples of 110: 110, 220, 330, 440, 550, 660, 770, 880, 990, 1100
You can continue to list out the multiples of these numbers as long as needed to find a match. Once you do find a match, or several matches, the smallest of these matches would be the Least Common Multiple. For instance, the first matching multiple(s) of 57 and 110 are 6270, 12540, 18810. Because 6270 is the smallest, it is the least common multiple.
The LCM of 57 and 110 is 6270.
Find the LCM of Other Number Pairs
Want more practice? Try some of these other LCM problems:
What is the LCM of 116 and 100?
What is the LCM of 82 and 59?
What is the LCM of 71 and 142?
What is the LCM of 48 and 1?
What is the LCM of 54 and 133?