Highest Common Factor of 640, 786, 428 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 640, 786, 428 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 640, 786, 428 is 2 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 640, 786, 428 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 640, 786, 428 is 2.
HCF(640, 786, 428) = 2
HCF of 640, 786, 428 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 640, 786, 428 is 2.
Highest Common Factor of 640,786,428 is 2
Step 1: Since 786 > 640, we apply the division lemma to 786 and 640, to get
786 = 640 x 1 + 146
Step 2: Since the reminder 640 ≠ 0, we apply division lemma to 146 and 640, to get
640 = 146 x 4 + 56
Step 3: We consider the new divisor 146 and the new remainder 56, and apply the division lemma to get
146 = 56 x 2 + 34
We consider the new divisor 56 and the new remainder 34,and apply the division lemma to get
56 = 34 x 1 + 22
We consider the new divisor 34 and the new remainder 22,and apply the division lemma to get
34 = 22 x 1 + 12
We consider the new divisor 22 and the new remainder 12,and apply the division lemma to get
22 = 12 x 1 + 10
We consider the new divisor 12 and the new remainder 10,and apply the division lemma to get
12 = 10 x 1 + 2
We consider the new divisor 10 and the new remainder 2,and apply the division lemma to get
10 = 2 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 640 and 786 is 2
Notice that 2 = HCF(10,2) = HCF(12,10) = HCF(22,12) = HCF(34,22) = HCF(56,34) = HCF(146,56) = HCF(640,146) = HCF(786,640) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 428 > 2, we apply the division lemma to 428 and 2, to get
428 = 2 x 214 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 2 and 428 is 2
Notice that 2 = HCF(428,2) .
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Frequently Asked Questions on HCF of 640, 786, 428 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 640, 786, 428?
Answer: HCF of 640, 786, 428 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 640, 786, 428 using Euclid's Algorithm?
Answer: For arbitrary numbers 640, 786, 428 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.