Highest Common Factor of 478, 818, 681 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 478, 818, 681 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 478, 818, 681 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 478, 818, 681 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 478, 818, 681 is 1.

HCF(478, 818, 681) = 1

HCF of 478, 818, 681 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 478, 818, 681 is 1.

Highest Common Factor of 478,818,681 using Euclid's algorithm

Highest Common Factor of 478,818,681 is 1

Step 1: Since 818 > 478, we apply the division lemma to 818 and 478, to get

818 = 478 x 1 + 340

Step 2: Since the reminder 478 ≠ 0, we apply division lemma to 340 and 478, to get

478 = 340 x 1 + 138

Step 3: We consider the new divisor 340 and the new remainder 138, and apply the division lemma to get

340 = 138 x 2 + 64

We consider the new divisor 138 and the new remainder 64,and apply the division lemma to get

138 = 64 x 2 + 10

We consider the new divisor 64 and the new remainder 10,and apply the division lemma to get

64 = 10 x 6 + 4

We consider the new divisor 10 and the new remainder 4,and apply the division lemma to get

10 = 4 x 2 + 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 478 and 818 is 2

Notice that 2 = HCF(4,2) = HCF(10,4) = HCF(64,10) = HCF(138,64) = HCF(340,138) = HCF(478,340) = HCF(818,478) .

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

Step 1: Since 681 > 2, we apply the division lemma to 681 and 2, to get

681 = 2 x 340 + 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 681 is 1

Notice that 1 = HCF(2,1) = HCF(681,2) .

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Frequently Asked Questions on HCF of 478, 818, 681 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 478, 818, 681?

Answer: HCF of 478, 818, 681 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 478, 818, 681 using Euclid's Algorithm?

Answer: For arbitrary numbers 478, 818, 681 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.