Highest Common Factor of 423, 665 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 423, 665 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 423, 665 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 423, 665 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 423, 665 is 1.
HCF(423, 665) = 1
HCF of 423, 665 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 423, 665 is 1.
Highest Common Factor of 423,665 is 1
Step 1: Since 665 > 423, we apply the division lemma to 665 and 423, to get
665 = 423 x 1 + 242
Step 2: Since the reminder 423 ≠ 0, we apply division lemma to 242 and 423, to get
423 = 242 x 1 + 181
Step 3: We consider the new divisor 242 and the new remainder 181, and apply the division lemma to get
242 = 181 x 1 + 61
We consider the new divisor 181 and the new remainder 61,and apply the division lemma to get
181 = 61 x 2 + 59
We consider the new divisor 61 and the new remainder 59,and apply the division lemma to get
61 = 59 x 1 + 2
We consider the new divisor 59 and the new remainder 2,and apply the division lemma to get
59 = 2 x 29 + 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 423 and 665 is 1
Notice that 1 = HCF(2,1) = HCF(59,2) = HCF(61,59) = HCF(181,61) = HCF(242,181) = HCF(423,242) = HCF(665,423) .
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Frequently Asked Questions on HCF of 423, 665 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 423, 665?
Answer: HCF of 423, 665 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 423, 665 using Euclid's Algorithm?
Answer: For arbitrary numbers 423, 665 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.