Highest Common Factor of 991, 845, 257, 228 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, 845, 257, 228 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 991, 845, 257, 228 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, 845, 257, 228 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, 845, 257, 228 is 1.

HCF(991, 845, 257, 228) = 1

HCF of 991, 845, 257, 228 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, 845, 257, 228 is 1.

Highest Common Factor of 991,845,257,228 using Euclid's algorithm

Highest Common Factor of 991,845,257,228 is 1

Step 1: Since 991 > 845, we apply the division lemma to 991 and 845, to get

991 = 845 x 1 + 146

Step 2: Since the reminder 845 ≠ 0, we apply division lemma to 146 and 845, to get

845 = 146 x 5 + 115

Step 3: We consider the new divisor 146 and the new remainder 115, and apply the division lemma to get

146 = 115 x 1 + 31

We consider the new divisor 115 and the new remainder 31,and apply the division lemma to get

115 = 31 x 3 + 22

We consider the new divisor 31 and the new remainder 22,and apply the division lemma to get

31 = 22 x 1 + 9

We consider the new divisor 22 and the new remainder 9,and apply the division lemma to get

22 = 9 x 2 + 4

We consider the new divisor 9 and the new remainder 4,and apply the division lemma to get

9 = 4 x 2 + 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 845 is 1

Notice that 1 = HCF(4,1) = HCF(9,4) = HCF(22,9) = HCF(31,22) = HCF(115,31) = HCF(146,115) = HCF(845,146) = HCF(991,845) .

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

Step 1: Since 257 > 1, we apply the division lemma to 257 and 1, to get

257 = 1 x 257 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 257 is 1

Notice that 1 = HCF(257,1) .

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

Step 1: Since 228 > 1, we apply the division lemma to 228 and 1, to get

228 = 1 x 228 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 228 is 1

Notice that 1 = HCF(228,1) .

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Frequently Asked Questions on HCF of 991, 845, 257, 228 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, 845, 257, 228?

Answer: HCF of 991, 845, 257, 228 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 991, 845, 257, 228 using Euclid's Algorithm?

Answer: For arbitrary numbers 991, 845, 257, 228 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.