Highest Common Factor of 643, 139, 408 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 643, 139, 408 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 643, 139, 408 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 643, 139, 408 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 643, 139, 408 is 1.
HCF(643, 139, 408) = 1
HCF of 643, 139, 408 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 643, 139, 408 is 1.
Highest Common Factor of 643,139,408 is 1
Step 1: Since 643 > 139, we apply the division lemma to 643 and 139, to get
643 = 139 x 4 + 87
Step 2: Since the reminder 139 ≠ 0, we apply division lemma to 87 and 139, to get
139 = 87 x 1 + 52
Step 3: We consider the new divisor 87 and the new remainder 52, and apply the division lemma to get
87 = 52 x 1 + 35
We consider the new divisor 52 and the new remainder 35,and apply the division lemma to get
52 = 35 x 1 + 17
We consider the new divisor 35 and the new remainder 17,and apply the division lemma to get
35 = 17 x 2 + 1
We consider the new divisor 17 and the new remainder 1,and apply the division lemma to get
17 = 1 x 17 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 643 and 139 is 1
Notice that 1 = HCF(17,1) = HCF(35,17) = HCF(52,35) = HCF(87,52) = HCF(139,87) = HCF(643,139) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 408 > 1, we apply the division lemma to 408 and 1, to get
408 = 1 x 408 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 408 is 1
Notice that 1 = HCF(408,1) .
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Frequently Asked Questions on HCF of 643, 139, 408 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 643, 139, 408?
Answer: HCF of 643, 139, 408 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 643, 139, 408 using Euclid's Algorithm?
Answer: For arbitrary numbers 643, 139, 408 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.