Highest Common Factor of 561, 808, 455 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 561, 808, 455 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 561, 808, 455 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 561, 808, 455 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 561, 808, 455 is 1.

HCF(561, 808, 455) = 1

HCF of 561, 808, 455 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 561, 808, 455 is 1.

Highest Common Factor of 561,808,455 using Euclid's algorithm

Highest Common Factor of 561,808,455 is 1

Step 1: Since 808 > 561, we apply the division lemma to 808 and 561, to get

808 = 561 x 1 + 247

Step 2: Since the reminder 561 ≠ 0, we apply division lemma to 247 and 561, to get

561 = 247 x 2 + 67

Step 3: We consider the new divisor 247 and the new remainder 67, and apply the division lemma to get

247 = 67 x 3 + 46

We consider the new divisor 67 and the new remainder 46,and apply the division lemma to get

67 = 46 x 1 + 21

We consider the new divisor 46 and the new remainder 21,and apply the division lemma to get

46 = 21 x 2 + 4

We consider the new divisor 21 and the new remainder 4,and apply the division lemma to get

21 = 4 x 5 + 1

We consider the new divisor 4 and the new remainder 1,and apply the division lemma to get

4 = 1 x 4 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 561 and 808 is 1

Notice that 1 = HCF(4,1) = HCF(21,4) = HCF(46,21) = HCF(67,46) = HCF(247,67) = HCF(561,247) = HCF(808,561) .

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

Step 1: Since 455 > 1, we apply the division lemma to 455 and 1, to get

455 = 1 x 455 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 455 is 1

Notice that 1 = HCF(455,1) .

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Frequently Asked Questions on HCF of 561, 808, 455 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 561, 808, 455?

Answer: HCF of 561, 808, 455 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 561, 808, 455 using Euclid's Algorithm?

Answer: For arbitrary numbers 561, 808, 455 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.