Q:

What is the LCM of 119 and 57?

Accepted Solution

A:
Solution: The LCM of 119 and 57 is 6783 Methods How to find the LCM of 119 and 57 using Prime Factorization One way to find the LCM of 119 and 57 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 119? What are the Factors of 57? Here is the prime factorization of 119: 7 1 × 1 7 1 7^1 × 17^1 7 1 × 1 7 1 And this is the prime factorization of 57: 3 1 × 1 9 1 3^1 × 19^1 3 1 × 1 9 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: 7, 17, 3, 19 3 1 × 7 1 × 1 7 1 × 1 9 1 = 6783 3^1 × 7^1 × 17^1 × 19^1 = 6783 3 1 × 7 1 × 1 7 1 × 1 9 1 = 6783 Through this we see that the LCM of 119 and 57 is 6783. How to Find the LCM of 119 and 57 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 119 and 57 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, 119 and 57: What are the Multiples of 119? What are the Multiples of 57? Let’s take a look at the first 10 multiples for each of these numbers, 119 and 57: First 10 Multiples of 119: 119, 238, 357, 476, 595, 714, 833, 952, 1071, 1190 First 10 Multiples of 57: 57, 114, 171, 228, 285, 342, 399, 456, 513, 570 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 119 and 57 are 6783, 13566, 20349. Because 6783 is the smallest, it is the least common multiple. The LCM of 119 and 57 is 6783. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 142 and 140? What is the LCM of 99 and 15? What is the LCM of 22 and 76? What is the LCM of 75 and 24? What is the LCM of 6 and 111?