Highest Common Factor of 780, 4921 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 780, 4921 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 780, 4921 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 780, 4921 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 780, 4921 is 1.

HCF(780, 4921) = 1

HCF of 780, 4921 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 780, 4921 is 1.

Highest Common Factor of 780,4921 using Euclid's algorithm

Highest Common Factor of 780,4921 is 1

Step 1: Since 4921 > 780, we apply the division lemma to 4921 and 780, to get

4921 = 780 x 6 + 241

Step 2: Since the reminder 780 ≠ 0, we apply division lemma to 241 and 780, to get

780 = 241 x 3 + 57

Step 3: We consider the new divisor 241 and the new remainder 57, and apply the division lemma to get

241 = 57 x 4 + 13

We consider the new divisor 57 and the new remainder 13,and apply the division lemma to get

57 = 13 x 4 + 5

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 780 and 4921 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(13,5) = HCF(57,13) = HCF(241,57) = HCF(780,241) = HCF(4921,780) .

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Frequently Asked Questions on HCF of 780, 4921 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 780, 4921?

Answer: HCF of 780, 4921 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 780, 4921 using Euclid's Algorithm?

Answer: For arbitrary numbers 780, 4921 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.