Highest Common Factor of 251, 721 using Euclid's algorithm

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

HCF Calculator using the Euclid Division Algorithm helps you to find the Highest common factor (HCF) easily for 251, 721 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 251, 721 is 1 the largest number which exactly divides all the numbers i.e. where the remainder is zero. Let us get into the working of this example.

Consider we have numbers 251, 721 and we need to find the HCF of these numbers. To do so, we need to choose the largest integer first and then as per Euclid's Division Lemma a = bq + r where 0 ≤ r ≤ b

Highest common factor (HCF) of 251, 721 is 1.

HCF(251, 721) = 1

HCF of 251, 721 using Euclid's algorithm

Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.

HCF of:

Highest common factor (HCF) of 251, 721 is 1.

Highest Common Factor of 251,721 using Euclid's algorithm

Highest Common Factor of 251,721 is 1

Step 1: Since 721 > 251, we apply the division lemma to 721 and 251, to get

721 = 251 x 2 + 219

Step 2: Since the reminder 251 ≠ 0, we apply division lemma to 219 and 251, to get

251 = 219 x 1 + 32

Step 3: We consider the new divisor 219 and the new remainder 32, and apply the division lemma to get

219 = 32 x 6 + 27

We consider the new divisor 32 and the new remainder 27,and apply the division lemma to get

32 = 27 x 1 + 5

We consider the new divisor 27 and the new remainder 5,and apply the division lemma to get

27 = 5 x 5 + 2

We consider the new divisor 5 and the new remainder 2,and apply the division lemma to get

5 = 2 x 2 + 1

We consider the new divisor 2 and the new remainder 1,and apply the division lemma to get

2 = 1 x 2 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 251 and 721 is 1

Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(27,5) = HCF(32,27) = HCF(219,32) = HCF(251,219) = HCF(721,251) .

HCF using Euclid's Algorithm Calculation Examples

Here are some samples of HCF using Euclid's Algorithm calculations.

Frequently Asked Questions on HCF of 251, 721 using Euclid's Algorithm

1. What is the Euclid division algorithm?

Answer: Euclid's Division Algorithm is a technique to compute the Highest Common Factor (HCF) of given positive integers.

2. what is the HCF of 251, 721?

Answer: HCF of 251, 721 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 251, 721 using Euclid's Algorithm?

Answer: For arbitrary numbers 251, 721 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.