Highest Common Factor of 720, 423 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 720, 423 i.e. 9 the largest integer that leaves a remainder zero for all numbers.
HCF of 720, 423 is 9 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 720, 423 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 720, 423 is 9.
HCF(720, 423) = 9
HCF of 720, 423 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 720, 423 is 9.
Highest Common Factor of 720,423 is 9
Step 1: Since 720 > 423, we apply the division lemma to 720 and 423, to get
720 = 423 x 1 + 297
Step 2: Since the reminder 423 ≠ 0, we apply division lemma to 297 and 423, to get
423 = 297 x 1 + 126
Step 3: We consider the new divisor 297 and the new remainder 126, and apply the division lemma to get
297 = 126 x 2 + 45
We consider the new divisor 126 and the new remainder 45,and apply the division lemma to get
126 = 45 x 2 + 36
We consider the new divisor 45 and the new remainder 36,and apply the division lemma to get
45 = 36 x 1 + 9
We consider the new divisor 36 and the new remainder 9,and apply the division lemma to get
36 = 9 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 9, the HCF of 720 and 423 is 9
Notice that 9 = HCF(36,9) = HCF(45,36) = HCF(126,45) = HCF(297,126) = HCF(423,297) = HCF(720,423) .
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Frequently Asked Questions on HCF of 720, 423 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 720, 423?
Answer: HCF of 720, 423 is 9 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 720, 423 using Euclid's Algorithm?
Answer: For arbitrary numbers 720, 423 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.