Solution: The LCM of 142 and 67 is 9514
Methods
How to find the LCM of 142 and 67 using Prime Factorization
One way to find the LCM of 142 and 67 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 142?
What are the Factors of 67?
Here is the prime factorization of 142:
2
1
×
7
1
1
2^1 × 71^1
2 1 × 7 1 1
And this is the prime factorization of 67:
6
7
1
67^1
6 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: 2, 71, 67
2
1
×
6
7
1
×
7
1
1
=
9514
2^1 × 67^1 × 71^1 = 9514
2 1 × 6 7 1 × 7 1 1 = 9514
Through this we see that the LCM of 142 and 67 is 9514.
How to Find the LCM of 142 and 67 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 142 and 67 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, 142 and 67:
What are the Multiples of 142?
What are the Multiples of 67?
Let’s take a look at the first 10 multiples for each of these numbers, 142 and 67:
First 10 Multiples of 142: 142, 284, 426, 568, 710, 852, 994, 1136, 1278, 1420
First 10 Multiples of 67: 67, 134, 201, 268, 335, 402, 469, 536, 603, 670
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 142 and 67 are 9514, 19028, 28542. Because 9514 is the smallest, it is the least common multiple.
The LCM of 142 and 67 is 9514.
Find the LCM of Other Number Pairs
Want more practice? Try some of these other LCM problems:
What is the LCM of 110 and 116?
What is the LCM of 52 and 69?
What is the LCM of 20 and 132?
What is the LCM of 117 and 67?
What is the LCM of 87 and 59?