Highest Common Factor of 817, 644 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 817, 644 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 817, 644 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 817, 644 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 817, 644 is 1.
HCF(817, 644) = 1
HCF of 817, 644 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 817, 644 is 1.
Highest Common Factor of 817,644 is 1
Step 1: Since 817 > 644, we apply the division lemma to 817 and 644, to get
817 = 644 x 1 + 173
Step 2: Since the reminder 644 ≠ 0, we apply division lemma to 173 and 644, to get
644 = 173 x 3 + 125
Step 3: We consider the new divisor 173 and the new remainder 125, and apply the division lemma to get
173 = 125 x 1 + 48
We consider the new divisor 125 and the new remainder 48,and apply the division lemma to get
125 = 48 x 2 + 29
We consider the new divisor 48 and the new remainder 29,and apply the division lemma to get
48 = 29 x 1 + 19
We consider the new divisor 29 and the new remainder 19,and apply the division lemma to get
29 = 19 x 1 + 10
We consider the new divisor 19 and the new remainder 10,and apply the division lemma to get
19 = 10 x 1 + 9
We consider the new divisor 10 and the new remainder 9,and apply the division lemma to get
10 = 9 x 1 + 1
We consider the new divisor 9 and the new remainder 1,and apply the division lemma to get
9 = 1 x 9 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 817 and 644 is 1
Notice that 1 = HCF(9,1) = HCF(10,9) = HCF(19,10) = HCF(29,19) = HCF(48,29) = HCF(125,48) = HCF(173,125) = HCF(644,173) = HCF(817,644) .
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Frequently Asked Questions on HCF of 817, 644 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 817, 644?
Answer: HCF of 817, 644 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 817, 644 using Euclid's Algorithm?
Answer: For arbitrary numbers 817, 644 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.
