Highest Common Factor of 720, 861, 430 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, 861, 430 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 720, 861, 430 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 720, 861, 430 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, 861, 430 is 1.
HCF(720, 861, 430) = 1
HCF of 720, 861, 430 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, 861, 430 is 1.
Highest Common Factor of 720,861,430 is 1
Step 1: Since 861 > 720, we apply the division lemma to 861 and 720, to get
861 = 720 x 1 + 141
Step 2: Since the reminder 720 ≠ 0, we apply division lemma to 141 and 720, to get
720 = 141 x 5 + 15
Step 3: We consider the new divisor 141 and the new remainder 15, and apply the division lemma to get
141 = 15 x 9 + 6
We consider the new divisor 15 and the new remainder 6,and apply the division lemma to get
15 = 6 x 2 + 3
We consider the new divisor 6 and the new remainder 3,and apply the division lemma to get
6 = 3 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 720 and 861 is 3
Notice that 3 = HCF(6,3) = HCF(15,6) = HCF(141,15) = HCF(720,141) = HCF(861,720) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 430 > 3, we apply the division lemma to 430 and 3, to get
430 = 3 x 143 + 1
Step 2: Since the reminder 3 ≠ 0, we apply division lemma to 1 and 3, to get
3 = 1 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 3 and 430 is 1
Notice that 1 = HCF(3,1) = HCF(430,3) .
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Frequently Asked Questions on HCF of 720, 861, 430 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, 861, 430?
Answer: HCF of 720, 861, 430 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 720, 861, 430 using Euclid's Algorithm?
Answer: For arbitrary numbers 720, 861, 430 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.