Highest Common Factor of 636, 9781 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 636, 9781 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 636, 9781 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 636, 9781 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 636, 9781 is 1.
HCF(636, 9781) = 1
HCF of 636, 9781 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 636, 9781 is 1.
Highest Common Factor of 636,9781 is 1
Step 1: Since 9781 > 636, we apply the division lemma to 9781 and 636, to get
9781 = 636 x 15 + 241
Step 2: Since the reminder 636 ≠ 0, we apply division lemma to 241 and 636, to get
636 = 241 x 2 + 154
Step 3: We consider the new divisor 241 and the new remainder 154, and apply the division lemma to get
241 = 154 x 1 + 87
We consider the new divisor 154 and the new remainder 87,and apply the division lemma to get
154 = 87 x 1 + 67
We consider the new divisor 87 and the new remainder 67,and apply the division lemma to get
87 = 67 x 1 + 20
We consider the new divisor 67 and the new remainder 20,and apply the division lemma to get
67 = 20 x 3 + 7
We consider the new divisor 20 and the new remainder 7,and apply the division lemma to get
20 = 7 x 2 + 6
We consider the new divisor 7 and the new remainder 6,and apply the division lemma to get
7 = 6 x 1 + 1
We consider the new divisor 6 and the new remainder 1,and apply the division lemma to get
6 = 1 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 636 and 9781 is 1
Notice that 1 = HCF(6,1) = HCF(7,6) = HCF(20,7) = HCF(67,20) = HCF(87,67) = HCF(154,87) = HCF(241,154) = HCF(636,241) = HCF(9781,636) .
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Frequently Asked Questions on HCF of 636, 9781 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 636, 9781?
Answer: HCF of 636, 9781 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 636, 9781 using Euclid's Algorithm?
Answer: For arbitrary numbers 636, 9781 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.