Highest Common Factor of 658, 391 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 658, 391 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 658, 391 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 658, 391 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 658, 391 is 1.
HCF(658, 391) = 1
HCF of 658, 391 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 658, 391 is 1.
Highest Common Factor of 658,391 is 1
Step 1: Since 658 > 391, we apply the division lemma to 658 and 391, to get
658 = 391 x 1 + 267
Step 2: Since the reminder 391 ≠ 0, we apply division lemma to 267 and 391, to get
391 = 267 x 1 + 124
Step 3: We consider the new divisor 267 and the new remainder 124, and apply the division lemma to get
267 = 124 x 2 + 19
We consider the new divisor 124 and the new remainder 19,and apply the division lemma to get
124 = 19 x 6 + 10
We consider the new divisor 19 and the new remainder 10,and apply the division lemma to get
19 = 10 x 1 + 9
We consider the new divisor 10 and the new remainder 9,and apply the division lemma to get
10 = 9 x 1 + 1
We consider the new divisor 9 and the new remainder 1,and apply the division lemma to get
9 = 1 x 9 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 658 and 391 is 1
Notice that 1 = HCF(9,1) = HCF(10,9) = HCF(19,10) = HCF(124,19) = HCF(267,124) = HCF(391,267) = HCF(658,391) .
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Frequently Asked Questions on HCF of 658, 391 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 658, 391?
Answer: HCF of 658, 391 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 658, 391 using Euclid's Algorithm?
Answer: For arbitrary numbers 658, 391 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.