Highest Common Factor of 628, 689, 788, 668 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, 689, 788, 668 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 628, 689, 788, 668 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, 689, 788, 668 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, 689, 788, 668 is 1.

HCF(628, 689, 788, 668) = 1

HCF of 628, 689, 788, 668 using Euclid's algorithm

Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.

HCF of:

Highest common factor (HCF) of 628, 689, 788, 668 is 1.

Highest Common Factor of 628,689,788,668 using Euclid's algorithm

Highest Common Factor of 628,689,788,668 is 1

Step 1: Since 689 > 628, we apply the division lemma to 689 and 628, to get

689 = 628 x 1 + 61

Step 2: Since the reminder 628 ≠ 0, we apply division lemma to 61 and 628, to get

628 = 61 x 10 + 18

Step 3: We consider the new divisor 61 and the new remainder 18, and apply the division lemma to get

61 = 18 x 3 + 7

We consider the new divisor 18 and the new remainder 7,and apply the division lemma to get

18 = 7 x 2 + 4

We consider the new divisor 7 and the new remainder 4,and apply the division lemma to get

7 = 4 x 1 + 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 628 and 689 is 1

Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(7,4) = HCF(18,7) = HCF(61,18) = HCF(628,61) = HCF(689,628) .

We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma

Step 1: Since 788 > 1, we apply the division lemma to 788 and 1, to get

788 = 1 x 788 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 788 is 1

Notice that 1 = HCF(788,1) .

We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma

Step 1: Since 668 > 1, we apply the division lemma to 668 and 1, to get

668 = 1 x 668 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 668 is 1

Notice that 1 = HCF(668,1) .

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Frequently Asked Questions on HCF of 628, 689, 788, 668 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, 689, 788, 668?

Answer: HCF of 628, 689, 788, 668 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 628, 689, 788, 668 using Euclid's Algorithm?

Answer: For arbitrary numbers 628, 689, 788, 668 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.