Highest Common Factor of 391, 506, 686 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 391, 506, 686 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 391, 506, 686 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 391, 506, 686 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 391, 506, 686 is 1.
HCF(391, 506, 686) = 1
HCF of 391, 506, 686 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 391, 506, 686 is 1.
Highest Common Factor of 391,506,686 is 1
Step 1: Since 506 > 391, we apply the division lemma to 506 and 391, to get
506 = 391 x 1 + 115
Step 2: Since the reminder 391 ≠ 0, we apply division lemma to 115 and 391, to get
391 = 115 x 3 + 46
Step 3: We consider the new divisor 115 and the new remainder 46, and apply the division lemma to get
115 = 46 x 2 + 23
We consider the new divisor 46 and the new remainder 23, and apply the division lemma to get
46 = 23 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 23, the HCF of 391 and 506 is 23
Notice that 23 = HCF(46,23) = HCF(115,46) = HCF(391,115) = HCF(506,391) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 686 > 23, we apply the division lemma to 686 and 23, to get
686 = 23 x 29 + 19
Step 2: Since the reminder 23 ≠ 0, we apply division lemma to 19 and 23, to get
23 = 19 x 1 + 4
Step 3: We consider the new divisor 19 and the new remainder 4, and apply the division lemma to get
19 = 4 x 4 + 3
We consider the new divisor 4 and the new remainder 3,and apply the division lemma to get
4 = 3 x 1 + 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 23 and 686 is 1
Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(19,4) = HCF(23,19) = HCF(686,23) .
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Frequently Asked Questions on HCF of 391, 506, 686 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 391, 506, 686?
Answer: HCF of 391, 506, 686 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 391, 506, 686 using Euclid's Algorithm?
Answer: For arbitrary numbers 391, 506, 686 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.
