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LCM of 4 and 8

What is the LCM of 4 and 8? - The LCM of 4 and 8 is 8. Follow the step by step instructions on how to find the least common multiple of 4 and 8.

Least Common Multiple of 4 and 8

Number 1:
Number 2:

What is the least common multiple of 4 and 8?

Answer: 8

How to find the lcm of 4 and 8?

Method 1 - Listing Multiples

To find the lcm of 4 and 8, we first need to find the multiples of 4 and 8 and then choose the least common multiple that are dividable by 4 and 8.

Multiples of 4 = 4, 8
Multiples of 8 = 8

The least common multiple of 4 and 8 is 8, because 8 is the smallest number that is divisible by both 4 and 8.





Method 2 - Prime Factorization

Another method to find the least common multiple of 4 and 8 is by using the prime factorization method.
To use prime factorization, we first need to find the prime factors of 4 and 8, and then get the LCM by multiplying the prime factors that are rasied to their highest power from the two sets.

Prime factorization of 4 = 2 x 2 = 22
Prime factorization of 8 = 2 x 2 x 2 = 23
Prime factors to the highest power = 23 = 8

LCM of 3 and 8
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LCM of 4 and 9
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