Highest Common Factor of 628, 243 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 628, 243 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 628, 243 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 628, 243 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 628, 243 is 1.
HCF(628, 243) = 1
HCF of 628, 243 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 628, 243 is 1.
Highest Common Factor of 628,243 is 1
Step 1: Since 628 > 243, we apply the division lemma to 628 and 243, to get
628 = 243 x 2 + 142
Step 2: Since the reminder 243 ≠ 0, we apply division lemma to 142 and 243, to get
243 = 142 x 1 + 101
Step 3: We consider the new divisor 142 and the new remainder 101, and apply the division lemma to get
142 = 101 x 1 + 41
We consider the new divisor 101 and the new remainder 41,and apply the division lemma to get
101 = 41 x 2 + 19
We consider the new divisor 41 and the new remainder 19,and apply the division lemma to get
41 = 19 x 2 + 3
We consider the new divisor 19 and the new remainder 3,and apply the division lemma to get
19 = 3 x 6 + 1
We consider the new divisor 3 and the new remainder 1,and apply the division lemma 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 628 and 243 is 1
Notice that 1 = HCF(3,1) = HCF(19,3) = HCF(41,19) = HCF(101,41) = HCF(142,101) = HCF(243,142) = HCF(628,243) .
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Frequently Asked Questions on HCF of 628, 243 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 628, 243?
Answer: HCF of 628, 243 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 628, 243 using Euclid's Algorithm?
Answer: For arbitrary numbers 628, 243 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.