Highest Common Factor of 771, 634, 28 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 771, 634, 28 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 771, 634, 28 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 771, 634, 28 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 771, 634, 28 is 1.

HCF(771, 634, 28) = 1

HCF of 771, 634, 28 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 771, 634, 28 is 1.

Highest Common Factor of 771,634,28 using Euclid's algorithm

Highest Common Factor of 771,634,28 is 1

Step 1: Since 771 > 634, we apply the division lemma to 771 and 634, to get

771 = 634 x 1 + 137

Step 2: Since the reminder 634 ≠ 0, we apply division lemma to 137 and 634, to get

634 = 137 x 4 + 86

Step 3: We consider the new divisor 137 and the new remainder 86, and apply the division lemma to get

137 = 86 x 1 + 51

We consider the new divisor 86 and the new remainder 51,and apply the division lemma to get

86 = 51 x 1 + 35

We consider the new divisor 51 and the new remainder 35,and apply the division lemma to get

51 = 35 x 1 + 16

We consider the new divisor 35 and the new remainder 16,and apply the division lemma to get

35 = 16 x 2 + 3

We consider the new divisor 16 and the new remainder 3,and apply the division lemma to get

16 = 3 x 5 + 1

We consider the new divisor 3 and the new remainder 1,and apply the division lemma to get

3 = 1 x 3 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 771 and 634 is 1

Notice that 1 = HCF(3,1) = HCF(16,3) = HCF(35,16) = HCF(51,35) = HCF(86,51) = HCF(137,86) = HCF(634,137) = HCF(771,634) .

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

Step 1: Since 28 > 1, we apply the division lemma to 28 and 1, to get

28 = 1 x 28 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 28 is 1

Notice that 1 = HCF(28,1) .

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Frequently Asked Questions on HCF of 771, 634, 28 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 771, 634, 28?

Answer: HCF of 771, 634, 28 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 771, 634, 28 using Euclid's Algorithm?

Answer: For arbitrary numbers 771, 634, 28 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.