Highest Common Factor
Highest Common Factor (HCF)
Highest Common Factor (HCF)
Also commonly referred to as the Greatest Common Divisor (GCD), the HCF of 2 numbers is the largest number that divides both numbers.
Also commonly referred to as the Greatest Common Divisor (GCD), the HCF of 2 numbers is the largest number that divides both numbers.
For example, the HCF of 12 and 18 is 6 as 6 can divide both 12 and 18.
For example, the HCF of 12 and 18 is 6 as 6 can divide both 12 and 18.
Watch the YouTube Video to learn more.
Watch the YouTube Video to learn more.
There are generally 2 methods used to find the HCF:
There are generally 2 methods used to find the HCF:
- Prime Factorisation Method (Ladder)
HCF Calculator
HCF Calculator
Use the applet below to find the HCF of 2 numbers using the Prime-Factorisation method.
Use the applet below to find the HCF of 2 numbers using the Prime-Factorisation method.
Next: Learn about the LCM
Next: Learn about the LCM