Highest Common Factor of 642, 69447 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 642, 69447 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 642, 69447 is 3 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 642, 69447 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 642, 69447 is 3.
HCF(642, 69447) = 3
HCF of 642, 69447 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 642, 69447 is 3.
Highest Common Factor of 642,69447 is 3
Step 1: Since 69447 > 642, we apply the division lemma to 69447 and 642, to get
69447 = 642 x 108 + 111
Step 2: Since the reminder 642 ≠ 0, we apply division lemma to 111 and 642, to get
642 = 111 x 5 + 87
Step 3: We consider the new divisor 111 and the new remainder 87, and apply the division lemma to get
111 = 87 x 1 + 24
We consider the new divisor 87 and the new remainder 24,and apply the division lemma to get
87 = 24 x 3 + 15
We consider the new divisor 24 and the new remainder 15,and apply the division lemma to get
24 = 15 x 1 + 9
We consider the new divisor 15 and the new remainder 9,and apply the division lemma to get
15 = 9 x 1 + 6
We consider the new divisor 9 and the new remainder 6,and apply the division lemma to get
9 = 6 x 1 + 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 642 and 69447 is 3
Notice that 3 = HCF(6,3) = HCF(9,6) = HCF(15,9) = HCF(24,15) = HCF(87,24) = HCF(111,87) = HCF(642,111) = HCF(69447,642) .
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Frequently Asked Questions on HCF of 642, 69447 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 642, 69447?
Answer: HCF of 642, 69447 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 642, 69447 using Euclid's Algorithm?
Answer: For arbitrary numbers 642, 69447 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.