Q:

What is the LCM of 71 and 92?

Accepted Solution

A:
Solution: The LCM of 71 and 92 is 6532 Methods How to find the LCM of 71 and 92 using Prime Factorization One way to find the LCM of 71 and 92 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 71? What are the Factors of 92? Here is the prime factorization of 71: 7 1 1 71^1 7 1 1 And this is the prime factorization of 92: 2 2 × 2 3 1 2^2 × 23^1 2 2 × 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: 71, 2, 23 2 2 × 2 3 1 × 7 1 1 = 6532 2^2 × 23^1 × 71^1 = 6532 2 2 × 2 3 1 × 7 1 1 = 6532 Through this we see that the LCM of 71 and 92 is 6532. How to Find the LCM of 71 and 92 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 71 and 92 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, 71 and 92: What are the Multiples of 71? What are the Multiples of 92? Let’s take a look at the first 10 multiples for each of these numbers, 71 and 92: First 10 Multiples of 71: 71, 142, 213, 284, 355, 426, 497, 568, 639, 710 First 10 Multiples of 92: 92, 184, 276, 368, 460, 552, 644, 736, 828, 920 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 71 and 92 are 6532, 13064, 19596. Because 6532 is the smallest, it is the least common multiple. The LCM of 71 and 92 is 6532. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 78 and 100? What is the LCM of 13 and 122? What is the LCM of 97 and 53? What is the LCM of 37 and 5? What is the LCM of 80 and 101?