Highest Common Factor of 397, 969, 157 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 397, 969, 157 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 397, 969, 157 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 397, 969, 157 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 397, 969, 157 is 1.

HCF(397, 969, 157) = 1

HCF of 397, 969, 157 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 397, 969, 157 is 1.

Highest Common Factor of 397,969,157 using Euclid's algorithm

Highest Common Factor of 397,969,157 is 1

Step 1: Since 969 > 397, we apply the division lemma to 969 and 397, to get

969 = 397 x 2 + 175

Step 2: Since the reminder 397 ≠ 0, we apply division lemma to 175 and 397, to get

397 = 175 x 2 + 47

Step 3: We consider the new divisor 175 and the new remainder 47, and apply the division lemma to get

175 = 47 x 3 + 34

We consider the new divisor 47 and the new remainder 34,and apply the division lemma to get

47 = 34 x 1 + 13

We consider the new divisor 34 and the new remainder 13,and apply the division lemma to get

34 = 13 x 2 + 8

We consider the new divisor 13 and the new remainder 8,and apply the division lemma to get

13 = 8 x 1 + 5

We consider the new divisor 8 and the new remainder 5,and apply the division lemma to get

8 = 5 x 1 + 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 397 and 969 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(8,5) = HCF(13,8) = HCF(34,13) = HCF(47,34) = HCF(175,47) = HCF(397,175) = HCF(969,397) .

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

Step 1: Since 157 > 1, we apply the division lemma to 157 and 1, to get

157 = 1 x 157 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 157 is 1

Notice that 1 = HCF(157,1) .

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Frequently Asked Questions on HCF of 397, 969, 157 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 397, 969, 157?

Answer: HCF of 397, 969, 157 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 397, 969, 157 using Euclid's Algorithm?

Answer: For arbitrary numbers 397, 969, 157 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.