Q:

What is the LCM of 103 and 97?

Accepted Solution

A:
Solution: The LCM of 103 and 97 is 9991 Methods How to find the LCM of 103 and 97 using Prime Factorization One way to find the LCM of 103 and 97 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 103? What are the Factors of 97? Here is the prime factorization of 103: 10 3 1 103^1 10 3 1 And this is the prime factorization of 97: 9 7 1 97^1 9 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: 103, 97 9 7 1 × 10 3 1 = 9991 97^1 × 103^1 = 9991 9 7 1 × 10 3 1 = 9991 Through this we see that the LCM of 103 and 97 is 9991. How to Find the LCM of 103 and 97 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 103 and 97 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, 103 and 97: What are the Multiples of 103? What are the Multiples of 97? Let’s take a look at the first 10 multiples for each of these numbers, 103 and 97: First 10 Multiples of 103: 103, 206, 309, 412, 515, 618, 721, 824, 927, 1030 First 10 Multiples of 97: 97, 194, 291, 388, 485, 582, 679, 776, 873, 970 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 103 and 97 are 9991, 19982, 29973. Because 9991 is the smallest, it is the least common multiple. The LCM of 103 and 97 is 9991. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 61 and 117? What is the LCM of 96 and 6? What is the LCM of 109 and 59? What is the LCM of 111 and 106? What is the LCM of 32 and 70?