Highest Common Factor of 415, 643, 790 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 415, 643, 790 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 415, 643, 790 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 415, 643, 790 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 415, 643, 790 is 1.

HCF(415, 643, 790) = 1

HCF of 415, 643, 790 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 415, 643, 790 is 1.

Highest Common Factor of 415,643,790 using Euclid's algorithm

Highest Common Factor of 415,643,790 is 1

Step 1: Since 643 > 415, we apply the division lemma to 643 and 415, to get

643 = 415 x 1 + 228

Step 2: Since the reminder 415 ≠ 0, we apply division lemma to 228 and 415, to get

415 = 228 x 1 + 187

Step 3: We consider the new divisor 228 and the new remainder 187, and apply the division lemma to get

228 = 187 x 1 + 41

We consider the new divisor 187 and the new remainder 41,and apply the division lemma to get

187 = 41 x 4 + 23

We consider the new divisor 41 and the new remainder 23,and apply the division lemma to get

41 = 23 x 1 + 18

We consider the new divisor 23 and the new remainder 18,and apply the division lemma to get

23 = 18 x 1 + 5

We consider the new divisor 18 and the new remainder 5,and apply the division lemma to get

18 = 5 x 3 + 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 415 and 643 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(18,5) = HCF(23,18) = HCF(41,23) = HCF(187,41) = HCF(228,187) = HCF(415,228) = HCF(643,415) .

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

Step 1: Since 790 > 1, we apply the division lemma to 790 and 1, to get

790 = 1 x 790 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 790 is 1

Notice that 1 = HCF(790,1) .

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Frequently Asked Questions on HCF of 415, 643, 790 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 415, 643, 790?

Answer: HCF of 415, 643, 790 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 415, 643, 790 using Euclid's Algorithm?

Answer: For arbitrary numbers 415, 643, 790 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.