Highest Common Factor of 420, 955, 581 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 420, 955, 581 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 420, 955, 581 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 420, 955, 581 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 420, 955, 581 is 1.

HCF(420, 955, 581) = 1

HCF of 420, 955, 581 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 420, 955, 581 is 1.

Highest Common Factor of 420,955,581 using Euclid's algorithm

Highest Common Factor of 420,955,581 is 1

Step 1: Since 955 > 420, we apply the division lemma to 955 and 420, to get

955 = 420 x 2 + 115

Step 2: Since the reminder 420 ≠ 0, we apply division lemma to 115 and 420, to get

420 = 115 x 3 + 75

Step 3: We consider the new divisor 115 and the new remainder 75, and apply the division lemma to get

115 = 75 x 1 + 40

We consider the new divisor 75 and the new remainder 40,and apply the division lemma to get

75 = 40 x 1 + 35

We consider the new divisor 40 and the new remainder 35,and apply the division lemma to get

40 = 35 x 1 + 5

We consider the new divisor 35 and the new remainder 5,and apply the division lemma to get

35 = 5 x 7 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 420 and 955 is 5

Notice that 5 = HCF(35,5) = HCF(40,35) = HCF(75,40) = HCF(115,75) = HCF(420,115) = HCF(955,420) .

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

Step 1: Since 581 > 5, we apply the division lemma to 581 and 5, to get

581 = 5 x 116 + 1

Step 2: Since the reminder 5 ≠ 0, we apply division lemma to 1 and 5, to get

5 = 1 x 5 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 5 and 581 is 1

Notice that 1 = HCF(5,1) = HCF(581,5) .

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Frequently Asked Questions on HCF of 420, 955, 581 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 420, 955, 581?

Answer: HCF of 420, 955, 581 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 420, 955, 581 using Euclid's Algorithm?

Answer: For arbitrary numbers 420, 955, 581 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.