Highest Common Factor of 991, 571, 949 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 991, 571, 949 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 991, 571, 949 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 991, 571, 949 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 991, 571, 949 is 1.

HCF(991, 571, 949) = 1

HCF of 991, 571, 949 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 991, 571, 949 is 1.

Highest Common Factor of 991,571,949 using Euclid's algorithm

Highest Common Factor of 991,571,949 is 1

Step 1: Since 991 > 571, we apply the division lemma to 991 and 571, to get

991 = 571 x 1 + 420

Step 2: Since the reminder 571 ≠ 0, we apply division lemma to 420 and 571, to get

571 = 420 x 1 + 151

Step 3: We consider the new divisor 420 and the new remainder 151, and apply the division lemma to get

420 = 151 x 2 + 118

We consider the new divisor 151 and the new remainder 118,and apply the division lemma to get

151 = 118 x 1 + 33

We consider the new divisor 118 and the new remainder 33,and apply the division lemma to get

118 = 33 x 3 + 19

We consider the new divisor 33 and the new remainder 19,and apply the division lemma to get

33 = 19 x 1 + 14

We consider the new divisor 19 and the new remainder 14,and apply the division lemma to get

19 = 14 x 1 + 5

We consider the new divisor 14 and the new remainder 5,and apply the division lemma to get

14 = 5 x 2 + 4

We consider the new divisor 5 and the new remainder 4,and apply the division lemma to get

5 = 4 x 1 + 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 991 and 571 is 1

Notice that 1 = HCF(4,1) = HCF(5,4) = HCF(14,5) = HCF(19,14) = HCF(33,19) = HCF(118,33) = HCF(151,118) = HCF(420,151) = HCF(571,420) = HCF(991,571) .

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

Step 1: Since 949 > 1, we apply the division lemma to 949 and 1, to get

949 = 1 x 949 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 949 is 1

Notice that 1 = HCF(949,1) .

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Frequently Asked Questions on HCF of 991, 571, 949 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 991, 571, 949?

Answer: HCF of 991, 571, 949 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 991, 571, 949 using Euclid's Algorithm?

Answer: For arbitrary numbers 991, 571, 949 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.