Q:

What is the LCM of 148 and 69?

Accepted Solution

A:
Solution: The LCM of 148 and 69 is 10212 Methods How to find the LCM of 148 and 69 using Prime Factorization One way to find the LCM of 148 and 69 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 148? What are the Factors of 69? Here is the prime factorization of 148: 2 2 × 3 7 1 2^2 × 37^1 2 2 × 3 7 1 And this is the prime factorization of 69: 3 1 × 2 3 1 3^1 × 23^1 3 1 × 2 3 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, 37, 3, 23 2 2 × 3 1 × 2 3 1 × 3 7 1 = 10212 2^2 × 3^1 × 23^1 × 37^1 = 10212 2 2 × 3 1 × 2 3 1 × 3 7 1 = 10212 Through this we see that the LCM of 148 and 69 is 10212. How to Find the LCM of 148 and 69 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 148 and 69 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, 148 and 69: What are the Multiples of 148? What are the Multiples of 69? Let’s take a look at the first 10 multiples for each of these numbers, 148 and 69: First 10 Multiples of 148: 148, 296, 444, 592, 740, 888, 1036, 1184, 1332, 1480 First 10 Multiples of 69: 69, 138, 207, 276, 345, 414, 483, 552, 621, 690 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 148 and 69 are 10212, 20424, 30636. Because 10212 is the smallest, it is the least common multiple. The LCM of 148 and 69 is 10212. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 144 and 17? What is the LCM of 103 and 29? What is the LCM of 68 and 35? What is the LCM of 70 and 31? What is the LCM of 135 and 142?