Highest Common Factor of 921, 646, 381 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 921, 646, 381 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 921, 646, 381 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 921, 646, 381 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 921, 646, 381 is 1.

HCF(921, 646, 381) = 1

HCF of 921, 646, 381 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 921, 646, 381 is 1.

Highest Common Factor of 921,646,381 using Euclid's algorithm

Highest Common Factor of 921,646,381 is 1

Step 1: Since 921 > 646, we apply the division lemma to 921 and 646, to get

921 = 646 x 1 + 275

Step 2: Since the reminder 646 ≠ 0, we apply division lemma to 275 and 646, to get

646 = 275 x 2 + 96

Step 3: We consider the new divisor 275 and the new remainder 96, and apply the division lemma to get

275 = 96 x 2 + 83

We consider the new divisor 96 and the new remainder 83,and apply the division lemma to get

96 = 83 x 1 + 13

We consider the new divisor 83 and the new remainder 13,and apply the division lemma to get

83 = 13 x 6 + 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 921 and 646 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(13,5) = HCF(83,13) = HCF(96,83) = HCF(275,96) = HCF(646,275) = HCF(921,646) .

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

Step 1: Since 381 > 1, we apply the division lemma to 381 and 1, to get

381 = 1 x 381 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 381 is 1

Notice that 1 = HCF(381,1) .

HCF using Euclid's Algorithm Calculation Examples

Here are some samples of HCF using Euclid's Algorithm calculations.

Frequently Asked Questions on HCF of 921, 646, 381 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 921, 646, 381?

Answer: HCF of 921, 646, 381 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 921, 646, 381 using Euclid's Algorithm?

Answer: For arbitrary numbers 921, 646, 381 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.