Highest Common Factor of 819, 651 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 819, 651 i.e. 21 the largest integer that leaves a remainder zero for all numbers.
HCF of 819, 651 is 21 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 819, 651 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 819, 651 is 21.
HCF(819, 651) = 21
HCF of 819, 651 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 819, 651 is 21.
Highest Common Factor of 819,651 is 21
Step 1: Since 819 > 651, we apply the division lemma to 819 and 651, to get
819 = 651 x 1 + 168
Step 2: Since the reminder 651 ≠ 0, we apply division lemma to 168 and 651, to get
651 = 168 x 3 + 147
Step 3: We consider the new divisor 168 and the new remainder 147, and apply the division lemma to get
168 = 147 x 1 + 21
We consider the new divisor 147 and the new remainder 21, and apply the division lemma to get
147 = 21 x 7 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 21, the HCF of 819 and 651 is 21
Notice that 21 = HCF(147,21) = HCF(168,147) = HCF(651,168) = HCF(819,651) .
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Frequently Asked Questions on HCF of 819, 651 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 819, 651?
Answer: HCF of 819, 651 is 21 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 819, 651 using Euclid's Algorithm?
Answer: For arbitrary numbers 819, 651 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.