Highest Common Factor of 812, 645 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 812, 645 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 812, 645 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 812, 645 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 812, 645 is 1.
HCF(812, 645) = 1
HCF of 812, 645 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 812, 645 is 1.
Highest Common Factor of 812,645 is 1
Step 1: Since 812 > 645, we apply the division lemma to 812 and 645, to get
812 = 645 x 1 + 167
Step 2: Since the reminder 645 ≠ 0, we apply division lemma to 167 and 645, to get
645 = 167 x 3 + 144
Step 3: We consider the new divisor 167 and the new remainder 144, and apply the division lemma to get
167 = 144 x 1 + 23
We consider the new divisor 144 and the new remainder 23,and apply the division lemma to get
144 = 23 x 6 + 6
We consider the new divisor 23 and the new remainder 6,and apply the division lemma to get
23 = 6 x 3 + 5
We consider the new divisor 6 and the new remainder 5,and apply the division lemma to get
6 = 5 x 1 + 1
We consider the new divisor 5 and the new remainder 1,and apply the division lemma to get
5 = 1 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 812 and 645 is 1
Notice that 1 = HCF(5,1) = HCF(6,5) = HCF(23,6) = HCF(144,23) = HCF(167,144) = HCF(645,167) = HCF(812,645) .
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Frequently Asked Questions on HCF of 812, 645 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 812, 645?
Answer: HCF of 812, 645 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 812, 645 using Euclid's Algorithm?
Answer: For arbitrary numbers 812, 645 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.