Highest Common Factor of 687, 623, 90 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, 623, 90 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 687, 623, 90 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, 623, 90 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, 623, 90 is 1.

HCF(687, 623, 90) = 1

HCF of 687, 623, 90 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, 623, 90 is 1.

Highest Common Factor of 687,623,90 using Euclid's algorithm

Highest Common Factor of 687,623,90 is 1

Step 1: Since 687 > 623, we apply the division lemma to 687 and 623, to get

687 = 623 x 1 + 64

Step 2: Since the reminder 623 ≠ 0, we apply division lemma to 64 and 623, to get

623 = 64 x 9 + 47

Step 3: We consider the new divisor 64 and the new remainder 47, and apply the division lemma to get

64 = 47 x 1 + 17

We consider the new divisor 47 and the new remainder 17,and apply the division lemma to get

47 = 17 x 2 + 13

We consider the new divisor 17 and the new remainder 13,and apply the division lemma to get

17 = 13 x 1 + 4

We consider the new divisor 13 and the new remainder 4,and apply the division lemma to get

13 = 4 x 3 + 1

We consider the new divisor 4 and the new remainder 1,and apply the division lemma to get

4 = 1 x 4 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 687 and 623 is 1

Notice that 1 = HCF(4,1) = HCF(13,4) = HCF(17,13) = HCF(47,17) = HCF(64,47) = HCF(623,64) = HCF(687,623) .

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

Step 1: Since 90 > 1, we apply the division lemma to 90 and 1, to get

90 = 1 x 90 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 90 is 1

Notice that 1 = HCF(90,1) .

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Frequently Asked Questions on HCF of 687, 623, 90 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, 623, 90?

Answer: HCF of 687, 623, 90 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 687, 623, 90 using Euclid's Algorithm?

Answer: For arbitrary numbers 687, 623, 90 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.