Highest Common Factor of 638, 493, 473 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 638, 493, 473 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 638, 493, 473 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 638, 493, 473 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 638, 493, 473 is 1.
HCF(638, 493, 473) = 1
HCF of 638, 493, 473 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 638, 493, 473 is 1.
Highest Common Factor of 638,493,473 is 1
Step 1: Since 638 > 493, we apply the division lemma to 638 and 493, to get
638 = 493 x 1 + 145
Step 2: Since the reminder 493 ≠ 0, we apply division lemma to 145 and 493, to get
493 = 145 x 3 + 58
Step 3: We consider the new divisor 145 and the new remainder 58, and apply the division lemma to get
145 = 58 x 2 + 29
We consider the new divisor 58 and the new remainder 29, and apply the division lemma to get
58 = 29 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 29, the HCF of 638 and 493 is 29
Notice that 29 = HCF(58,29) = HCF(145,58) = HCF(493,145) = HCF(638,493) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 473 > 29, we apply the division lemma to 473 and 29, to get
473 = 29 x 16 + 9
Step 2: Since the reminder 29 ≠ 0, we apply division lemma to 9 and 29, to get
29 = 9 x 3 + 2
Step 3: We consider the new divisor 9 and the new remainder 2, and apply the division lemma to get
9 = 2 x 4 + 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 29 and 473 is 1
Notice that 1 = HCF(2,1) = HCF(9,2) = HCF(29,9) = HCF(473,29) .
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Frequently Asked Questions on HCF of 638, 493, 473 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 638, 493, 473?
Answer: HCF of 638, 493, 473 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 638, 493, 473 using Euclid's Algorithm?
Answer: For arbitrary numbers 638, 493, 473 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.