Highest Common Factor of 840, 2911 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 840, 2911 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 840, 2911 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 840, 2911 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 840, 2911 is 1.

HCF(840, 2911) = 1

HCF of 840, 2911 using Euclid's algorithm

Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.

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Highest common factor (HCF) of 840, 2911 is 1.

Highest Common Factor of 840,2911 using Euclid's algorithm

Highest Common Factor of 840,2911 is 1

Step 1: Since 2911 > 840, we apply the division lemma to 2911 and 840, to get

2911 = 840 x 3 + 391

Step 2: Since the reminder 840 ≠ 0, we apply division lemma to 391 and 840, to get

840 = 391 x 2 + 58

Step 3: We consider the new divisor 391 and the new remainder 58, and apply the division lemma to get

391 = 58 x 6 + 43

We consider the new divisor 58 and the new remainder 43,and apply the division lemma to get

58 = 43 x 1 + 15

We consider the new divisor 43 and the new remainder 15,and apply the division lemma to get

43 = 15 x 2 + 13

We consider the new divisor 15 and the new remainder 13,and apply the division lemma to get

15 = 13 x 1 + 2

We consider the new divisor 13 and the new remainder 2,and apply the division lemma to get

13 = 2 x 6 + 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 840 and 2911 is 1

Notice that 1 = HCF(2,1) = HCF(13,2) = HCF(15,13) = HCF(43,15) = HCF(58,43) = HCF(391,58) = HCF(840,391) = HCF(2911,840) .

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Frequently Asked Questions on HCF of 840, 2911 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 840, 2911?

Answer: HCF of 840, 2911 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 840, 2911 using Euclid's Algorithm?

Answer: For arbitrary numbers 840, 2911 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.