Highest Common Factor of 546, 391, 643 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 546, 391, 643 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 546, 391, 643 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 546, 391, 643 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 546, 391, 643 is 1.

HCF(546, 391, 643) = 1

HCF of 546, 391, 643 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 546, 391, 643 is 1.

Highest Common Factor of 546,391,643 using Euclid's algorithm

Highest Common Factor of 546,391,643 is 1

Step 1: Since 546 > 391, we apply the division lemma to 546 and 391, to get

546 = 391 x 1 + 155

Step 2: Since the reminder 391 ≠ 0, we apply division lemma to 155 and 391, to get

391 = 155 x 2 + 81

Step 3: We consider the new divisor 155 and the new remainder 81, and apply the division lemma to get

155 = 81 x 1 + 74

We consider the new divisor 81 and the new remainder 74,and apply the division lemma to get

81 = 74 x 1 + 7

We consider the new divisor 74 and the new remainder 7,and apply the division lemma to get

74 = 7 x 10 + 4

We consider the new divisor 7 and the new remainder 4,and apply the division lemma to get

7 = 4 x 1 + 3

We consider the new divisor 4 and the new remainder 3,and apply the division lemma to get

4 = 3 x 1 + 1

We consider the new divisor 3 and the new remainder 1,and apply the division lemma to get

3 = 1 x 3 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 546 and 391 is 1

Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(7,4) = HCF(74,7) = HCF(81,74) = HCF(155,81) = HCF(391,155) = HCF(546,391) .

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

Step 1: Since 643 > 1, we apply the division lemma to 643 and 1, to get

643 = 1 x 643 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 643 is 1

Notice that 1 = HCF(643,1) .

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Frequently Asked Questions on HCF of 546, 391, 643 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 546, 391, 643?

Answer: HCF of 546, 391, 643 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 546, 391, 643 using Euclid's Algorithm?

Answer: For arbitrary numbers 546, 391, 643 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.