Highest Common Factor of 691, 247, 385 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 691, 247, 385 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 691, 247, 385 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 691, 247, 385 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 691, 247, 385 is 1.

HCF(691, 247, 385) = 1

HCF of 691, 247, 385 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 691, 247, 385 is 1.

Highest Common Factor of 691,247,385 using Euclid's algorithm

Highest Common Factor of 691,247,385 is 1

Step 1: Since 691 > 247, we apply the division lemma to 691 and 247, to get

691 = 247 x 2 + 197

Step 2: Since the reminder 247 ≠ 0, we apply division lemma to 197 and 247, to get

247 = 197 x 1 + 50

Step 3: We consider the new divisor 197 and the new remainder 50, and apply the division lemma to get

197 = 50 x 3 + 47

We consider the new divisor 50 and the new remainder 47,and apply the division lemma to get

50 = 47 x 1 + 3

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

47 = 3 x 15 + 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 691 and 247 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(47,3) = HCF(50,47) = HCF(197,50) = HCF(247,197) = HCF(691,247) .

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

Step 1: Since 385 > 1, we apply the division lemma to 385 and 1, to get

385 = 1 x 385 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 385 is 1

Notice that 1 = HCF(385,1) .

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Frequently Asked Questions on HCF of 691, 247, 385 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 691, 247, 385?

Answer: HCF of 691, 247, 385 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 691, 247, 385 using Euclid's Algorithm?

Answer: For arbitrary numbers 691, 247, 385 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.