Highest Common Factor of 18, 247 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 18, 247 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 18, 247 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 18, 247 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 18, 247 is 1.

HCF(18, 247) = 1

HCF of 18, 247 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 18, 247 is 1.

Highest Common Factor of 18,247 using Euclid's algorithm

Highest Common Factor of 18,247 is 1

Step 1: Since 247 > 18, we apply the division lemma to 247 and 18, to get

247 = 18 x 13 + 13

Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 13 and 18, to get

18 = 13 x 1 + 5

Step 3: We consider the new divisor 13 and the new remainder 5, and apply the division lemma to get

13 = 5 x 2 + 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 18 and 247 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(13,5) = HCF(18,13) = HCF(247,18) .

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Frequently Asked Questions on HCF of 18, 247 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 18, 247?

Answer: HCF of 18, 247 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 18, 247 using Euclid's Algorithm?

Answer: For arbitrary numbers 18, 247 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.