Highest Common Factor of 722, 434, 643 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 722, 434, 643 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 722, 434, 643 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 722, 434, 643 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 722, 434, 643 is 1.

HCF(722, 434, 643) = 1

HCF of 722, 434, 643 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 722, 434, 643 is 1.

Highest Common Factor of 722,434,643 using Euclid's algorithm

Highest Common Factor of 722,434,643 is 1

Step 1: Since 722 > 434, we apply the division lemma to 722 and 434, to get

722 = 434 x 1 + 288

Step 2: Since the reminder 434 ≠ 0, we apply division lemma to 288 and 434, to get

434 = 288 x 1 + 146

Step 3: We consider the new divisor 288 and the new remainder 146, and apply the division lemma to get

288 = 146 x 1 + 142

We consider the new divisor 146 and the new remainder 142,and apply the division lemma to get

146 = 142 x 1 + 4

We consider the new divisor 142 and the new remainder 4,and apply the division lemma to get

142 = 4 x 35 + 2

We consider the new divisor 4 and the new remainder 2,and apply the division lemma to get

4 = 2 x 2 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 722 and 434 is 2

Notice that 2 = HCF(4,2) = HCF(142,4) = HCF(146,142) = HCF(288,146) = HCF(434,288) = HCF(722,434) .

We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma

Step 1: Since 643 > 2, we apply the division lemma to 643 and 2, to get

643 = 2 x 321 + 1

Step 2: Since the reminder 2 ≠ 0, we apply division lemma to 1 and 2, 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 2 and 643 is 1

Notice that 1 = HCF(2,1) = HCF(643,2) .

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Frequently Asked Questions on HCF of 722, 434, 643 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 722, 434, 643?

Answer: HCF of 722, 434, 643 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 722, 434, 643 using Euclid's Algorithm?

Answer: For arbitrary numbers 722, 434, 643 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.