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## Highest Common Factor (HCF) / Greatest Common Divisor (GCD)

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Prime Factorisation Method Successive Division Method
__Definition :-__

**The Highest Common Factor (HCF)** is the greatest number which divides two or more number completely; without leaving any remainder.

It is also known as **Greatest Common Divisor (GCD).**

**There are two methods of calculating HCF / GCD :-**

**1.** Prime Factorisation Method

**2.** Successive Division Method

**Both these methods are discussed in detail in the above link.**