Highest Common Factor of 470, 639 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 470, 639 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 470, 639 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 470, 639 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 470, 639 is 1.
HCF(470, 639) = 1
HCF of 470, 639 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 470, 639 is 1.
Highest Common Factor of 470,639 is 1
Step 1: Since 639 > 470, we apply the division lemma to 639 and 470, to get
639 = 470 x 1 + 169
Step 2: Since the reminder 470 ≠ 0, we apply division lemma to 169 and 470, to get
470 = 169 x 2 + 132
Step 3: We consider the new divisor 169 and the new remainder 132, and apply the division lemma to get
169 = 132 x 1 + 37
We consider the new divisor 132 and the new remainder 37,and apply the division lemma to get
132 = 37 x 3 + 21
We consider the new divisor 37 and the new remainder 21,and apply the division lemma to get
37 = 21 x 1 + 16
We consider the new divisor 21 and the new remainder 16,and apply the division lemma to get
21 = 16 x 1 + 5
We consider the new divisor 16 and the new remainder 5,and apply the division lemma to get
16 = 5 x 3 + 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 470 and 639 is 1
Notice that 1 = HCF(5,1) = HCF(16,5) = HCF(21,16) = HCF(37,21) = HCF(132,37) = HCF(169,132) = HCF(470,169) = HCF(639,470) .
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Frequently Asked Questions on HCF of 470, 639 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 470, 639?
Answer: HCF of 470, 639 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 470, 639 using Euclid's Algorithm?
Answer: For arbitrary numbers 470, 639 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.