Highest Common Factor of 787, 291 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 787, 291 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 787, 291 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 787, 291 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 787, 291 is 1.

HCF(787, 291) = 1

HCF of 787, 291 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 787, 291 is 1.

Highest Common Factor of 787,291 using Euclid's algorithm

Highest Common Factor of 787,291 is 1

Step 1: Since 787 > 291, we apply the division lemma to 787 and 291, to get

787 = 291 x 2 + 205

Step 2: Since the reminder 291 ≠ 0, we apply division lemma to 205 and 291, to get

291 = 205 x 1 + 86

Step 3: We consider the new divisor 205 and the new remainder 86, and apply the division lemma to get

205 = 86 x 2 + 33

We consider the new divisor 86 and the new remainder 33,and apply the division lemma to get

86 = 33 x 2 + 20

We consider the new divisor 33 and the new remainder 20,and apply the division lemma to get

33 = 20 x 1 + 13

We consider the new divisor 20 and the new remainder 13,and apply the division lemma to get

20 = 13 x 1 + 7

We consider the new divisor 13 and the new remainder 7,and apply the division lemma to get

13 = 7 x 1 + 6

We consider the new divisor 7 and the new remainder 6,and apply the division lemma to get

7 = 6 x 1 + 1

We consider the new divisor 6 and the new remainder 1,and apply the division lemma to get

6 = 1 x 6 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 787 and 291 is 1

Notice that 1 = HCF(6,1) = HCF(7,6) = HCF(13,7) = HCF(20,13) = HCF(33,20) = HCF(86,33) = HCF(205,86) = HCF(291,205) = HCF(787,291) .

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Frequently Asked Questions on HCF of 787, 291 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 787, 291?

Answer: HCF of 787, 291 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 787, 291 using Euclid's Algorithm?

Answer: For arbitrary numbers 787, 291 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.