Highest Common Factor of 161, 220, 493 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 161, 220, 493 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 161, 220, 493 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 161, 220, 493 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 161, 220, 493 is 1.

HCF(161, 220, 493) = 1

HCF of 161, 220, 493 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 161, 220, 493 is 1.

Highest Common Factor of 161,220,493 using Euclid's algorithm

Highest Common Factor of 161,220,493 is 1

Step 1: Since 220 > 161, we apply the division lemma to 220 and 161, to get

220 = 161 x 1 + 59

Step 2: Since the reminder 161 ≠ 0, we apply division lemma to 59 and 161, to get

161 = 59 x 2 + 43

Step 3: We consider the new divisor 59 and the new remainder 43, and apply the division lemma to get

59 = 43 x 1 + 16

We consider the new divisor 43 and the new remainder 16,and apply the division lemma to get

43 = 16 x 2 + 11

We consider the new divisor 16 and the new remainder 11,and apply the division lemma to get

16 = 11 x 1 + 5

We consider the new divisor 11 and the new remainder 5,and apply the division lemma to get

11 = 5 x 2 + 1

We consider the new divisor 5 and the new remainder 1,and apply the division lemma 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 161 and 220 is 1

Notice that 1 = HCF(5,1) = HCF(11,5) = HCF(16,11) = HCF(43,16) = HCF(59,43) = HCF(161,59) = HCF(220,161) .

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

Step 1: Since 493 > 1, we apply the division lemma to 493 and 1, to get

493 = 1 x 493 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 493 is 1

Notice that 1 = HCF(493,1) .

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Frequently Asked Questions on HCF of 161, 220, 493 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 161, 220, 493?

Answer: HCF of 161, 220, 493 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 161, 220, 493 using Euclid's Algorithm?

Answer: For arbitrary numbers 161, 220, 493 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.