Highest Common Factor of 821, 449, 249, 670 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 821, 449, 249, 670 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 821, 449, 249, 670 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 821, 449, 249, 670 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 821, 449, 249, 670 is 1.

HCF(821, 449, 249, 670) = 1

HCF of 821, 449, 249, 670 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 821, 449, 249, 670 is 1.

Highest Common Factor of 821,449,249,670 using Euclid's algorithm

Highest Common Factor of 821,449,249,670 is 1

Step 1: Since 821 > 449, we apply the division lemma to 821 and 449, to get

821 = 449 x 1 + 372

Step 2: Since the reminder 449 ≠ 0, we apply division lemma to 372 and 449, to get

449 = 372 x 1 + 77

Step 3: We consider the new divisor 372 and the new remainder 77, and apply the division lemma to get

372 = 77 x 4 + 64

We consider the new divisor 77 and the new remainder 64,and apply the division lemma to get

77 = 64 x 1 + 13

We consider the new divisor 64 and the new remainder 13,and apply the division lemma to get

64 = 13 x 4 + 12

We consider the new divisor 13 and the new remainder 12,and apply the division lemma to get

13 = 12 x 1 + 1

We consider the new divisor 12 and the new remainder 1,and apply the division lemma to get

12 = 1 x 12 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 821 and 449 is 1

Notice that 1 = HCF(12,1) = HCF(13,12) = HCF(64,13) = HCF(77,64) = HCF(372,77) = HCF(449,372) = HCF(821,449) .

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

Step 1: Since 249 > 1, we apply the division lemma to 249 and 1, to get

249 = 1 x 249 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 249 is 1

Notice that 1 = HCF(249,1) .

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

Step 1: Since 670 > 1, we apply the division lemma to 670 and 1, to get

670 = 1 x 670 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 670 is 1

Notice that 1 = HCF(670,1) .

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Frequently Asked Questions on HCF of 821, 449, 249, 670 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 821, 449, 249, 670?

Answer: HCF of 821, 449, 249, 670 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 821, 449, 249, 670 using Euclid's Algorithm?

Answer: For arbitrary numbers 821, 449, 249, 670 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.