Q:

What is the LCM of 82 and 126?

Accepted Solution

A:
Solution: The LCM of 82 and 126 is 5166 Methods How to find the LCM of 82 and 126 using Prime Factorization One way to find the LCM of 82 and 126 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 82? What are the Factors of 126? Here is the prime factorization of 82: 2 1 × 4 1 1 2^1 × 41^1 2 1 × 4 1 1 And this is the prime factorization of 126: 2 1 × 3 2 × 7 1 2^1 × 3^2 × 7^1 2 1 × 3 2 × 7 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: 2, 41, 3, 7 2 1 × 3 2 × 7 1 × 4 1 1 = 5166 2^1 × 3^2 × 7^1 × 41^1 = 5166 2 1 × 3 2 × 7 1 × 4 1 1 = 5166 Through this we see that the LCM of 82 and 126 is 5166. How to Find the LCM of 82 and 126 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 82 and 126 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, 82 and 126: What are the Multiples of 82? What are the Multiples of 126? Let’s take a look at the first 10 multiples for each of these numbers, 82 and 126: First 10 Multiples of 82: 82, 164, 246, 328, 410, 492, 574, 656, 738, 820 First 10 Multiples of 126: 126, 252, 378, 504, 630, 756, 882, 1008, 1134, 1260 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 82 and 126 are 5166, 10332, 15498. Because 5166 is the smallest, it is the least common multiple. The LCM of 82 and 126 is 5166. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 143 and 111? What is the LCM of 58 and 89? What is the LCM of 131 and 150? What is the LCM of 105 and 36? What is the LCM of 65 and 28?