Solution: The LCM of 14 and 98 is 98
Methods
How to find the LCM of 14 and 98 using Prime Factorization
One way to find the LCM of 14 and 98 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 14?
What are the Factors of 98?
Here is the prime factorization of 14:
2
1
×
7
1
2^1 × 7^1
2 1 × 7 1
And this is the prime factorization of 98:
2
1
×
7
2
2^1 × 7^2
2 1 × 7 2
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, 7
2
1
×
7
2
=
98
2^1 × 7^2 = 98
2 1 × 7 2 = 98
Through this we see that the LCM of 14 and 98 is 98.
How to Find the LCM of 14 and 98 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 14 and 98 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, 14 and 98:
What are the Multiples of 14?
What are the Multiples of 98?
Let’s take a look at the first 10 multiples for each of these numbers, 14 and 98:
First 10 Multiples of 14: 14, 28, 42, 56, 70, 84, 98, 112, 126, 140
First 10 Multiples of 98: 98, 196, 294, 392, 490, 588, 686, 784, 882, 980
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 14 and 98 are 98, 196, 294. Because 98 is the smallest, it is the least common multiple.
The LCM of 14 and 98 is 98.
Find the LCM of Other Number Pairs
Want more practice? Try some of these other LCM problems:
What is the LCM of 130 and 118?
What is the LCM of 127 and 36?
What is the LCM of 46 and 96?
What is the LCM of 145 and 78?
What is the LCM of 34 and 95?