Highest Common Factor of 806, 855, 420 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 806, 855, 420 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 806, 855, 420 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 806, 855, 420 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 806, 855, 420 is 1.

HCF(806, 855, 420) = 1

HCF of 806, 855, 420 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 806, 855, 420 is 1.

Highest Common Factor of 806,855,420 using Euclid's algorithm

Highest Common Factor of 806,855,420 is 1

Step 1: Since 855 > 806, we apply the division lemma to 855 and 806, to get

855 = 806 x 1 + 49

Step 2: Since the reminder 806 ≠ 0, we apply division lemma to 49 and 806, to get

806 = 49 x 16 + 22

Step 3: We consider the new divisor 49 and the new remainder 22, and apply the division lemma to get

49 = 22 x 2 + 5

We consider the new divisor 22 and the new remainder 5,and apply the division lemma to get

22 = 5 x 4 + 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 806 and 855 is 1

Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(22,5) = HCF(49,22) = HCF(806,49) = HCF(855,806) .

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

Step 1: Since 420 > 1, we apply the division lemma to 420 and 1, to get

420 = 1 x 420 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 420 is 1

Notice that 1 = HCF(420,1) .

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Frequently Asked Questions on HCF of 806, 855, 420 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 806, 855, 420?

Answer: HCF of 806, 855, 420 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 806, 855, 420 using Euclid's Algorithm?

Answer: For arbitrary numbers 806, 855, 420 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.