Highest Common Factor of 636, 385, 647, 978 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, 385, 647, 978 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 636, 385, 647, 978 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, 385, 647, 978 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, 385, 647, 978 is 1.
HCF(636, 385, 647, 978) = 1
HCF of 636, 385, 647, 978 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, 385, 647, 978 is 1.
Highest Common Factor of 636,385,647,978 is 1
Step 1: Since 636 > 385, we apply the division lemma to 636 and 385, to get
636 = 385 x 1 + 251
Step 2: Since the reminder 385 ≠ 0, we apply division lemma to 251 and 385, to get
385 = 251 x 1 + 134
Step 3: We consider the new divisor 251 and the new remainder 134, and apply the division lemma to get
251 = 134 x 1 + 117
We consider the new divisor 134 and the new remainder 117,and apply the division lemma to get
134 = 117 x 1 + 17
We consider the new divisor 117 and the new remainder 17,and apply the division lemma to get
117 = 17 x 6 + 15
We consider the new divisor 17 and the new remainder 15,and apply the division lemma to get
17 = 15 x 1 + 2
We consider the new divisor 15 and the new remainder 2,and apply the division lemma to get
15 = 2 x 7 + 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 636 and 385 is 1
Notice that 1 = HCF(2,1) = HCF(15,2) = HCF(17,15) = HCF(117,17) = HCF(134,117) = HCF(251,134) = HCF(385,251) = HCF(636,385) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 647 > 1, we apply the division lemma to 647 and 1, to get
647 = 1 x 647 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 647 is 1
Notice that 1 = HCF(647,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 978 > 1, we apply the division lemma to 978 and 1, to get
978 = 1 x 978 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 978 is 1
Notice that 1 = HCF(978,1) .
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Frequently Asked Questions on HCF of 636, 385, 647, 978 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, 385, 647, 978?
Answer: HCF of 636, 385, 647, 978 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 636, 385, 647, 978 using Euclid's Algorithm?
Answer: For arbitrary numbers 636, 385, 647, 978 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.