Highest Common Factor of 487, 631 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 487, 631 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 487, 631 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 487, 631 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 487, 631 is 1.

HCF(487, 631) = 1

HCF of 487, 631 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 487, 631 is 1.

Highest Common Factor of 487,631 using Euclid's algorithm

Highest Common Factor of 487,631 is 1

Step 1: Since 631 > 487, we apply the division lemma to 631 and 487, to get

631 = 487 x 1 + 144

Step 2: Since the reminder 487 ≠ 0, we apply division lemma to 144 and 487, to get

487 = 144 x 3 + 55

Step 3: We consider the new divisor 144 and the new remainder 55, and apply the division lemma to get

144 = 55 x 2 + 34

We consider the new divisor 55 and the new remainder 34,and apply the division lemma to get

55 = 34 x 1 + 21

We consider the new divisor 34 and the new remainder 21,and apply the division lemma to get

34 = 21 x 1 + 13

We consider the new divisor 21 and the new remainder 13,and apply the division lemma to get

21 = 13 x 1 + 8

We consider the new divisor 13 and the new remainder 8,and apply the division lemma to get

13 = 8 x 1 + 5

We consider the new divisor 8 and the new remainder 5,and apply the division lemma to get

8 = 5 x 1 + 3

We consider the new divisor 5 and the new remainder 3,and apply the division lemma to get

5 = 3 x 1 + 2

We consider the new divisor 3 and the new remainder 2,and apply the division lemma to get

3 = 2 x 1 + 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 487 and 631 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(8,5) = HCF(13,8) = HCF(21,13) = HCF(34,21) = HCF(55,34) = HCF(144,55) = HCF(487,144) = HCF(631,487) .

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Frequently Asked Questions on HCF of 487, 631 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 487, 631?

Answer: HCF of 487, 631 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 487, 631 using Euclid's Algorithm?

Answer: For arbitrary numbers 487, 631 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.