Highest Common Factor of 961, 390, 977 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 961, 390, 977 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 961, 390, 977 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 961, 390, 977 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 961, 390, 977 is 1.

HCF(961, 390, 977) = 1

HCF of 961, 390, 977 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 961, 390, 977 is 1.

Highest Common Factor of 961,390,977 using Euclid's algorithm

Highest Common Factor of 961,390,977 is 1

Step 1: Since 961 > 390, we apply the division lemma to 961 and 390, to get

961 = 390 x 2 + 181

Step 2: Since the reminder 390 ≠ 0, we apply division lemma to 181 and 390, to get

390 = 181 x 2 + 28

Step 3: We consider the new divisor 181 and the new remainder 28, and apply the division lemma to get

181 = 28 x 6 + 13

We consider the new divisor 28 and the new remainder 13,and apply the division lemma to get

28 = 13 x 2 + 2

We consider the new divisor 13 and the new remainder 2,and apply the division lemma to get

13 = 2 x 6 + 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 961 and 390 is 1

Notice that 1 = HCF(2,1) = HCF(13,2) = HCF(28,13) = HCF(181,28) = HCF(390,181) = HCF(961,390) .

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

Step 1: Since 977 > 1, we apply the division lemma to 977 and 1, to get

977 = 1 x 977 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 977 is 1

Notice that 1 = HCF(977,1) .

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Frequently Asked Questions on HCF of 961, 390, 977 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 961, 390, 977?

Answer: HCF of 961, 390, 977 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 961, 390, 977 using Euclid's Algorithm?

Answer: For arbitrary numbers 961, 390, 977 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.