Q:

What is the LCM of 150 and 61?

Accepted Solution

A:
Solution: The LCM of 150 and 61 is 9150 Methods How to find the LCM of 150 and 61 using Prime Factorization One way to find the LCM of 150 and 61 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 150? What are the Factors of 61? Here is the prime factorization of 150: 2 1 × 3 1 × 5 2 2^1 × 3^1 × 5^2 2 1 × 3 1 × 5 2 And this is the prime factorization of 61: 6 1 1 61^1 6 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: 2, 3, 5, 61 2 1 × 3 1 × 5 2 × 6 1 1 = 9150 2^1 × 3^1 × 5^2 × 61^1 = 9150 2 1 × 3 1 × 5 2 × 6 1 1 = 9150 Through this we see that the LCM of 150 and 61 is 9150. How to Find the LCM of 150 and 61 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 150 and 61 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, 150 and 61: What are the Multiples of 150? What are the Multiples of 61? Let’s take a look at the first 10 multiples for each of these numbers, 150 and 61: First 10 Multiples of 150: 150, 300, 450, 600, 750, 900, 1050, 1200, 1350, 1500 First 10 Multiples of 61: 61, 122, 183, 244, 305, 366, 427, 488, 549, 610 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 150 and 61 are 9150, 18300, 27450. Because 9150 is the smallest, it is the least common multiple. The LCM of 150 and 61 is 9150. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 70 and 102? What is the LCM of 42 and 120? What is the LCM of 27 and 10? What is the LCM of 147 and 132? What is the LCM of 3 and 140?