Highest Common Factor of 397, 781 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 397, 781 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 397, 781 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 397, 781 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 397, 781 is 1.
HCF(397, 781) = 1
HCF of 397, 781 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 397, 781 is 1.
Highest Common Factor of 397,781 is 1
Step 1: Since 781 > 397, we apply the division lemma to 781 and 397, to get
781 = 397 x 1 + 384
Step 2: Since the reminder 397 ≠ 0, we apply division lemma to 384 and 397, to get
397 = 384 x 1 + 13
Step 3: We consider the new divisor 384 and the new remainder 13, and apply the division lemma to get
384 = 13 x 29 + 7
We consider the new divisor 13 and the new remainder 7,and apply the division lemma to get
13 = 7 x 1 + 6
We consider the new divisor 7 and the new remainder 6,and apply the division lemma to get
7 = 6 x 1 + 1
We consider the new divisor 6 and the new remainder 1,and apply the division lemma to get
6 = 1 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 397 and 781 is 1
Notice that 1 = HCF(6,1) = HCF(7,6) = HCF(13,7) = HCF(384,13) = HCF(397,384) = HCF(781,397) .
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Frequently Asked Questions on HCF of 397, 781 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 397, 781?
Answer: HCF of 397, 781 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 397, 781 using Euclid's Algorithm?
Answer: For arbitrary numbers 397, 781 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.