Highest Common Factor of 785, 497, 73 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 785, 497, 73 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 785, 497, 73 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 785, 497, 73 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 785, 497, 73 is 1.

HCF(785, 497, 73) = 1

HCF of 785, 497, 73 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 785, 497, 73 is 1.

Highest Common Factor of 785,497,73 using Euclid's algorithm

Highest Common Factor of 785,497,73 is 1

Step 1: Since 785 > 497, we apply the division lemma to 785 and 497, to get

785 = 497 x 1 + 288

Step 2: Since the reminder 497 ≠ 0, we apply division lemma to 288 and 497, to get

497 = 288 x 1 + 209

Step 3: We consider the new divisor 288 and the new remainder 209, and apply the division lemma to get

288 = 209 x 1 + 79

We consider the new divisor 209 and the new remainder 79,and apply the division lemma to get

209 = 79 x 2 + 51

We consider the new divisor 79 and the new remainder 51,and apply the division lemma to get

79 = 51 x 1 + 28

We consider the new divisor 51 and the new remainder 28,and apply the division lemma to get

51 = 28 x 1 + 23

We consider the new divisor 28 and the new remainder 23,and apply the division lemma to get

28 = 23 x 1 + 5

We consider the new divisor 23 and the new remainder 5,and apply the division lemma to get

23 = 5 x 4 + 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 785 and 497 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(23,5) = HCF(28,23) = HCF(51,28) = HCF(79,51) = HCF(209,79) = HCF(288,209) = HCF(497,288) = HCF(785,497) .

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

Step 1: Since 73 > 1, we apply the division lemma to 73 and 1, to get

73 = 1 x 73 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 73 is 1

Notice that 1 = HCF(73,1) .

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Frequently Asked Questions on HCF of 785, 497, 73 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 785, 497, 73?

Answer: HCF of 785, 497, 73 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 785, 497, 73 using Euclid's Algorithm?

Answer: For arbitrary numbers 785, 497, 73 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.