Solutions by everydaycalculation.com

The GCF of 16 and 18 is 2.

- Find the prime factorization of 16

16 = 2 × 2 × 2 × 2 - Find the prime factorization of 18

18 = 2 × 3 × 3 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2

MathStep (Works offline)

Download our mobile app and learn how to find GCF of upto four numbers in your own time:

Android and iPhone/ iPad

Find hcf of: 32 & 36 8 & 9 48 & 54 80 & 90 112 & 126 32 & 18 16 & 36 48 & 18 16 & 54 80 & 18 16 & 90 112 & 18 16 & 126

Enter two numbers separate by comma. To find GCF of more than two numbers, click here.

The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

© everydaycalculation.com