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 618, 781, 126 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 618, 781, 126 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 618, 781, 126 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 618, 781, 126 is 1.
HCF(618, 781, 126) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 618, 781, 126 is 1.
Step 1: Since 781 > 618, we apply the division lemma to 781 and 618, to get
781 = 618 x 1 + 163
Step 2: Since the reminder 618 ≠ 0, we apply division lemma to 163 and 618, to get
618 = 163 x 3 + 129
Step 3: We consider the new divisor 163 and the new remainder 129, and apply the division lemma to get
163 = 129 x 1 + 34
We consider the new divisor 129 and the new remainder 34,and apply the division lemma to get
129 = 34 x 3 + 27
We consider the new divisor 34 and the new remainder 27,and apply the division lemma to get
34 = 27 x 1 + 7
We consider the new divisor 27 and the new remainder 7,and apply the division lemma to get
27 = 7 x 3 + 6
We consider the new divisor 7 and the new remainder 6,and apply the division lemma to get
7 = 6 x 1 + 1
We consider the new divisor 6 and the new remainder 1,and apply the division lemma to get
6 = 1 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 618 and 781 is 1
Notice that 1 = HCF(6,1) = HCF(7,6) = HCF(27,7) = HCF(34,27) = HCF(129,34) = HCF(163,129) = HCF(618,163) = HCF(781,618) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 126 > 1, we apply the division lemma to 126 and 1, to get
126 = 1 x 126 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 126 is 1
Notice that 1 = HCF(126,1) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 618, 781, 126?
Answer: HCF of 618, 781, 126 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 618, 781, 126 using Euclid's Algorithm?
Answer: For arbitrary numbers 618, 781, 126 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.