Highest Common Factor of 687, 495, 497 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 687, 495, 497 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 687, 495, 497 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 687, 495, 497 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 687, 495, 497 is 1.

HCF(687, 495, 497) = 1

HCF of 687, 495, 497 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 687, 495, 497 is 1.

Highest Common Factor of 687,495,497 using Euclid's algorithm

Highest Common Factor of 687,495,497 is 1

Step 1: Since 687 > 495, we apply the division lemma to 687 and 495, to get

687 = 495 x 1 + 192

Step 2: Since the reminder 495 ≠ 0, we apply division lemma to 192 and 495, to get

495 = 192 x 2 + 111

Step 3: We consider the new divisor 192 and the new remainder 111, and apply the division lemma to get

192 = 111 x 1 + 81

We consider the new divisor 111 and the new remainder 81,and apply the division lemma to get

111 = 81 x 1 + 30

We consider the new divisor 81 and the new remainder 30,and apply the division lemma to get

81 = 30 x 2 + 21

We consider the new divisor 30 and the new remainder 21,and apply the division lemma to get

30 = 21 x 1 + 9

We consider the new divisor 21 and the new remainder 9,and apply the division lemma to get

21 = 9 x 2 + 3

We consider the new divisor 9 and the new remainder 3,and apply the division lemma to get

9 = 3 x 3 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 687 and 495 is 3

Notice that 3 = HCF(9,3) = HCF(21,9) = HCF(30,21) = HCF(81,30) = HCF(111,81) = HCF(192,111) = HCF(495,192) = HCF(687,495) .

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

Step 1: Since 497 > 3, we apply the division lemma to 497 and 3, to get

497 = 3 x 165 + 2

Step 2: Since the reminder 3 ≠ 0, we apply division lemma to 2 and 3, to get

3 = 2 x 1 + 1

Step 3: 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 3 and 497 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(497,3) .

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Frequently Asked Questions on HCF of 687, 495, 497 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 687, 495, 497?

Answer: HCF of 687, 495, 497 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 687, 495, 497 using Euclid's Algorithm?

Answer: For arbitrary numbers 687, 495, 497 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.