Highest Common Factor of 122, 213, 643 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 122, 213, 643 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 122, 213, 643 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 122, 213, 643 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 122, 213, 643 is 1.
HCF(122, 213, 643) = 1
HCF of 122, 213, 643 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 122, 213, 643 is 1.
Highest Common Factor of 122,213,643 is 1
Step 1: Since 213 > 122, we apply the division lemma to 213 and 122, to get
213 = 122 x 1 + 91
Step 2: Since the reminder 122 ≠ 0, we apply division lemma to 91 and 122, to get
122 = 91 x 1 + 31
Step 3: We consider the new divisor 91 and the new remainder 31, and apply the division lemma to get
91 = 31 x 2 + 29
We consider the new divisor 31 and the new remainder 29,and apply the division lemma to get
31 = 29 x 1 + 2
We consider the new divisor 29 and the new remainder 2,and apply the division lemma to get
29 = 2 x 14 + 1
We consider the new divisor 2 and the new remainder 1,and apply the division lemma to get
2 = 1 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 122 and 213 is 1
Notice that 1 = HCF(2,1) = HCF(29,2) = HCF(31,29) = HCF(91,31) = HCF(122,91) = HCF(213,122) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 643 > 1, we apply the division lemma to 643 and 1, to get
643 = 1 x 643 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 643 is 1
Notice that 1 = HCF(643,1) .
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Frequently Asked Questions on HCF of 122, 213, 643 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 122, 213, 643?
Answer: HCF of 122, 213, 643 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 122, 213, 643 using Euclid's Algorithm?
Answer: For arbitrary numbers 122, 213, 643 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.