Highest Common Factor of 391, 628 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, 628 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 391, 628 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, 628 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, 628 is 1.
HCF(391, 628) = 1
HCF of 391, 628 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, 628 is 1.
Highest Common Factor of 391,628 is 1
Step 1: Since 628 > 391, we apply the division lemma to 628 and 391, to get
628 = 391 x 1 + 237
Step 2: Since the reminder 391 ≠ 0, we apply division lemma to 237 and 391, to get
391 = 237 x 1 + 154
Step 3: We consider the new divisor 237 and the new remainder 154, and apply the division lemma to get
237 = 154 x 1 + 83
We consider the new divisor 154 and the new remainder 83,and apply the division lemma to get
154 = 83 x 1 + 71
We consider the new divisor 83 and the new remainder 71,and apply the division lemma to get
83 = 71 x 1 + 12
We consider the new divisor 71 and the new remainder 12,and apply the division lemma to get
71 = 12 x 5 + 11
We consider the new divisor 12 and the new remainder 11,and apply the division lemma to get
12 = 11 x 1 + 1
We consider the new divisor 11 and the new remainder 1,and apply the division lemma to get
11 = 1 x 11 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 391 and 628 is 1
Notice that 1 = HCF(11,1) = HCF(12,11) = HCF(71,12) = HCF(83,71) = HCF(154,83) = HCF(237,154) = HCF(391,237) = HCF(628,391) .
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Frequently Asked Questions on HCF of 391, 628 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, 628?
Answer: HCF of 391, 628 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 391, 628 using Euclid's Algorithm?
Answer: For arbitrary numbers 391, 628 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.