Highest Common Factor of 53, 18, 81, 638 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 53, 18, 81, 638 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 53, 18, 81, 638 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 53, 18, 81, 638 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 53, 18, 81, 638 is 1.
HCF(53, 18, 81, 638) = 1
HCF of 53, 18, 81, 638 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 53, 18, 81, 638 is 1.
Highest Common Factor of 53,18,81,638 is 1
Step 1: Since 53 > 18, we apply the division lemma to 53 and 18, to get
53 = 18 x 2 + 17
Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 17 and 18, to get
18 = 17 x 1 + 1
Step 3: We consider the new divisor 17 and the new remainder 1, and apply the division lemma to get
17 = 1 x 17 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 53 and 18 is 1
Notice that 1 = HCF(17,1) = HCF(18,17) = HCF(53,18) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 81 > 1, we apply the division lemma to 81 and 1, to get
81 = 1 x 81 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 81 is 1
Notice that 1 = HCF(81,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 638 > 1, we apply the division lemma to 638 and 1, to get
638 = 1 x 638 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 638 is 1
Notice that 1 = HCF(638,1) .
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Frequently Asked Questions on HCF of 53, 18, 81, 638 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 53, 18, 81, 638?
Answer: HCF of 53, 18, 81, 638 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 53, 18, 81, 638 using Euclid's Algorithm?
Answer: For arbitrary numbers 53, 18, 81, 638 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.