Highest Common Factor of 819, 649, 641 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 819, 649, 641 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 819, 649, 641 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 819, 649, 641 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 819, 649, 641 is 1.

HCF(819, 649, 641) = 1

HCF of 819, 649, 641 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 819, 649, 641 is 1.

Highest Common Factor of 819,649,641 using Euclid's algorithm

Highest Common Factor of 819,649,641 is 1

Step 1: Since 819 > 649, we apply the division lemma to 819 and 649, to get

819 = 649 x 1 + 170

Step 2: Since the reminder 649 ≠ 0, we apply division lemma to 170 and 649, to get

649 = 170 x 3 + 139

Step 3: We consider the new divisor 170 and the new remainder 139, and apply the division lemma to get

170 = 139 x 1 + 31

We consider the new divisor 139 and the new remainder 31,and apply the division lemma to get

139 = 31 x 4 + 15

We consider the new divisor 31 and the new remainder 15,and apply the division lemma to get

31 = 15 x 2 + 1

We consider the new divisor 15 and the new remainder 1,and apply the division lemma to get

15 = 1 x 15 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 819 and 649 is 1

Notice that 1 = HCF(15,1) = HCF(31,15) = HCF(139,31) = HCF(170,139) = HCF(649,170) = HCF(819,649) .

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

Step 1: Since 641 > 1, we apply the division lemma to 641 and 1, to get

641 = 1 x 641 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 641 is 1

Notice that 1 = HCF(641,1) .

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Frequently Asked Questions on HCF of 819, 649, 641 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 819, 649, 641?

Answer: HCF of 819, 649, 641 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 819, 649, 641 using Euclid's Algorithm?

Answer: For arbitrary numbers 819, 649, 641 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.