Highest Common Factor of 819, 640 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 819, 640 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 819, 640 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 819, 640 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 819, 640 is 1.
HCF(819, 640) = 1
HCF of 819, 640 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 819, 640 is 1.
Highest Common Factor of 819,640 is 1
Step 1: Since 819 > 640, we apply the division lemma to 819 and 640, to get
819 = 640 x 1 + 179
Step 2: Since the reminder 640 ≠ 0, we apply division lemma to 179 and 640, to get
640 = 179 x 3 + 103
Step 3: We consider the new divisor 179 and the new remainder 103, and apply the division lemma to get
179 = 103 x 1 + 76
We consider the new divisor 103 and the new remainder 76,and apply the division lemma to get
103 = 76 x 1 + 27
We consider the new divisor 76 and the new remainder 27,and apply the division lemma to get
76 = 27 x 2 + 22
We consider the new divisor 27 and the new remainder 22,and apply the division lemma to get
27 = 22 x 1 + 5
We consider the new divisor 22 and the new remainder 5,and apply the division lemma to get
22 = 5 x 4 + 2
We consider the new divisor 5 and the new remainder 2,and apply the division lemma to get
5 = 2 x 2 + 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 819 and 640 is 1
Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(22,5) = HCF(27,22) = HCF(76,27) = HCF(103,76) = HCF(179,103) = HCF(640,179) = HCF(819,640) .
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Frequently Asked Questions on HCF of 819, 640 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 819, 640?
Answer: HCF of 819, 640 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 819, 640 using Euclid's Algorithm?
Answer: For arbitrary numbers 819, 640 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.