Highest Common Factor of 640, 468, 615 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 640, 468, 615 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 640, 468, 615 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 640, 468, 615 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 640, 468, 615 is 1.

HCF(640, 468, 615) = 1

HCF of 640, 468, 615 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 640, 468, 615 is 1.

Highest Common Factor of 640,468,615 using Euclid's algorithm

Highest Common Factor of 640,468,615 is 1

Step 1: Since 640 > 468, we apply the division lemma to 640 and 468, to get

640 = 468 x 1 + 172

Step 2: Since the reminder 468 ≠ 0, we apply division lemma to 172 and 468, to get

468 = 172 x 2 + 124

Step 3: We consider the new divisor 172 and the new remainder 124, and apply the division lemma to get

172 = 124 x 1 + 48

We consider the new divisor 124 and the new remainder 48,and apply the division lemma to get

124 = 48 x 2 + 28

We consider the new divisor 48 and the new remainder 28,and apply the division lemma to get

48 = 28 x 1 + 20

We consider the new divisor 28 and the new remainder 20,and apply the division lemma to get

28 = 20 x 1 + 8

We consider the new divisor 20 and the new remainder 8,and apply the division lemma to get

20 = 8 x 2 + 4

We consider the new divisor 8 and the new remainder 4,and apply the division lemma to get

8 = 4 x 2 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 4, the HCF of 640 and 468 is 4

Notice that 4 = HCF(8,4) = HCF(20,8) = HCF(28,20) = HCF(48,28) = HCF(124,48) = HCF(172,124) = HCF(468,172) = HCF(640,468) .

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

Step 1: Since 615 > 4, we apply the division lemma to 615 and 4, to get

615 = 4 x 153 + 3

Step 2: Since the reminder 4 ≠ 0, we apply division lemma to 3 and 4, to get

4 = 3 x 1 + 1

Step 3: 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 4 and 615 is 1

Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(615,4) .

HCF using Euclid's Algorithm Calculation Examples

Here are some samples of HCF using Euclid's Algorithm calculations.

Frequently Asked Questions on HCF of 640, 468, 615 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 640, 468, 615?

Answer: HCF of 640, 468, 615 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 640, 468, 615 using Euclid's Algorithm?

Answer: For arbitrary numbers 640, 468, 615 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.