Highest Common Factor of 420, 664, 344, 973 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 420, 664, 344, 973 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 420, 664, 344, 973 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 420, 664, 344, 973 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 420, 664, 344, 973 is 1.

HCF(420, 664, 344, 973) = 1

HCF of 420, 664, 344, 973 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 420, 664, 344, 973 is 1.

Highest Common Factor of 420,664,344,973 using Euclid's algorithm

Highest Common Factor of 420,664,344,973 is 1

Step 1: Since 664 > 420, we apply the division lemma to 664 and 420, to get

664 = 420 x 1 + 244

Step 2: Since the reminder 420 ≠ 0, we apply division lemma to 244 and 420, to get

420 = 244 x 1 + 176

Step 3: We consider the new divisor 244 and the new remainder 176, and apply the division lemma to get

244 = 176 x 1 + 68

We consider the new divisor 176 and the new remainder 68,and apply the division lemma to get

176 = 68 x 2 + 40

We consider the new divisor 68 and the new remainder 40,and apply the division lemma to get

68 = 40 x 1 + 28

We consider the new divisor 40 and the new remainder 28,and apply the division lemma to get

40 = 28 x 1 + 12

We consider the new divisor 28 and the new remainder 12,and apply the division lemma to get

28 = 12 x 2 + 4

We consider the new divisor 12 and the new remainder 4,and apply the division lemma to get

12 = 4 x 3 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 4, the HCF of 420 and 664 is 4

Notice that 4 = HCF(12,4) = HCF(28,12) = HCF(40,28) = HCF(68,40) = HCF(176,68) = HCF(244,176) = HCF(420,244) = HCF(664,420) .

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

Step 1: Since 344 > 4, we apply the division lemma to 344 and 4, to get

344 = 4 x 86 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 4, the HCF of 4 and 344 is 4

Notice that 4 = HCF(344,4) .

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

Step 1: Since 973 > 4, we apply the division lemma to 973 and 4, to get

973 = 4 x 243 + 1

Step 2: Since the reminder 4 ≠ 0, we apply division lemma to 1 and 4, to get

4 = 1 x 4 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 4 and 973 is 1

Notice that 1 = HCF(4,1) = HCF(973,4) .

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Frequently Asked Questions on HCF of 420, 664, 344, 973 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 420, 664, 344, 973?

Answer: HCF of 420, 664, 344, 973 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 420, 664, 344, 973 using Euclid's Algorithm?

Answer: For arbitrary numbers 420, 664, 344, 973 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.