Highest Common Factor of 15, 61, 23, 245 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 15, 61, 23, 245 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 15, 61, 23, 245 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 15, 61, 23, 245 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 15, 61, 23, 245 is 1.

HCF(15, 61, 23, 245) = 1

HCF of 15, 61, 23, 245 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 15, 61, 23, 245 is 1.

Highest Common Factor of 15,61,23,245 using Euclid's algorithm

Highest Common Factor of 15,61,23,245 is 1

Step 1: Since 61 > 15, we apply the division lemma to 61 and 15, to get

61 = 15 x 4 + 1

Step 2: Since the reminder 15 ≠ 0, we apply division lemma to 1 and 15, to get

15 = 1 x 15 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 15 and 61 is 1

Notice that 1 = HCF(15,1) = HCF(61,15) .


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

Step 1: Since 23 > 1, we apply the division lemma to 23 and 1, to get

23 = 1 x 23 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 23 is 1

Notice that 1 = HCF(23,1) .


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

Step 1: Since 245 > 1, we apply the division lemma to 245 and 1, to get

245 = 1 x 245 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 245 is 1

Notice that 1 = HCF(245,1) .

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Frequently Asked Questions on HCF of 15, 61, 23, 245 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 15, 61, 23, 245?

Answer: HCF of 15, 61, 23, 245 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 15, 61, 23, 245 using Euclid's Algorithm?

Answer: For arbitrary numbers 15, 61, 23, 245 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.