Highest Common Factor of 198, 505, 637 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 198, 505, 637 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 198, 505, 637 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 198, 505, 637 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 198, 505, 637 is 1.

HCF(198, 505, 637) = 1

HCF of 198, 505, 637 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 198, 505, 637 is 1.

Highest Common Factor of 198,505,637 using Euclid's algorithm

Highest Common Factor of 198,505,637 is 1

Step 1: Since 505 > 198, we apply the division lemma to 505 and 198, to get

505 = 198 x 2 + 109

Step 2: Since the reminder 198 ≠ 0, we apply division lemma to 109 and 198, to get

198 = 109 x 1 + 89

Step 3: We consider the new divisor 109 and the new remainder 89, and apply the division lemma to get

109 = 89 x 1 + 20

We consider the new divisor 89 and the new remainder 20,and apply the division lemma to get

89 = 20 x 4 + 9

We consider the new divisor 20 and the new remainder 9,and apply the division lemma to get

20 = 9 x 2 + 2

We consider the new divisor 9 and the new remainder 2,and apply the division lemma to get

9 = 2 x 4 + 1

We consider the new divisor 2 and the new remainder 1,and apply the division lemma to get

2 = 1 x 2 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 198 and 505 is 1

Notice that 1 = HCF(2,1) = HCF(9,2) = HCF(20,9) = HCF(89,20) = HCF(109,89) = HCF(198,109) = HCF(505,198) .

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

Step 1: Since 637 > 1, we apply the division lemma to 637 and 1, to get

637 = 1 x 637 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 637 is 1

Notice that 1 = HCF(637,1) .

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Frequently Asked Questions on HCF of 198, 505, 637 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 198, 505, 637?

Answer: HCF of 198, 505, 637 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 198, 505, 637 using Euclid's Algorithm?

Answer: For arbitrary numbers 198, 505, 637 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.