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Subjects>Math>Basic Math

What is the greatest common factor of 16 and 18?

Updated: 4/28/2022

Wiki User

∙ 7y ago

Best Answer

The great common factor of 16 and 18 is 2.

Method 1: Listing Factors

List all the factors of both numbers and the highest factor that is the same is the greatest common factor.

Factors of 16: 1, 2, 4, 8

Factors of 18: 1, 2, 3, 6, 9

The greatest common factor is 2.

Method 2: Prime Factorization

Find the prime factorization of each number. The prime numbers that the numbers all share multiply to the great common factor.

16 = 2 * 2 * 2 * 2

18 = 2 * 3 * 3

16 and 18 share one 2 as a prime factor. Therefore, the greatest common factor is 2.

Wiki User

∙ 7y ago

This answer is:

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Wiki User

∙ 6y ago

18-1,2,3,6,9,18 16-1,2,4,8,16 the number 2 appears in both sets of factors, so it must be 2. Answer: 2 is the GCF of 18 and 16

The Greatest Common Factor (GCF) is: 2

This answer is:

Wiki User

∙ 7y ago

It is: 2

This answer is:

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