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 491, 781, 867 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 491, 781, 867 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 491, 781, 867 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 491, 781, 867 is 1.
HCF(491, 781, 867) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 491, 781, 867 is 1.
Step 1: Since 781 > 491, we apply the division lemma to 781 and 491, to get
781 = 491 x 1 + 290
Step 2: Since the reminder 491 ≠ 0, we apply division lemma to 290 and 491, to get
491 = 290 x 1 + 201
Step 3: We consider the new divisor 290 and the new remainder 201, and apply the division lemma to get
290 = 201 x 1 + 89
We consider the new divisor 201 and the new remainder 89,and apply the division lemma to get
201 = 89 x 2 + 23
We consider the new divisor 89 and the new remainder 23,and apply the division lemma to get
89 = 23 x 3 + 20
We consider the new divisor 23 and the new remainder 20,and apply the division lemma to get
23 = 20 x 1 + 3
We consider the new divisor 20 and the new remainder 3,and apply the division lemma to get
20 = 3 x 6 + 2
We consider the new divisor 3 and the new remainder 2,and apply the division lemma to get
3 = 2 x 1 + 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 491 and 781 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(20,3) = HCF(23,20) = HCF(89,23) = HCF(201,89) = HCF(290,201) = HCF(491,290) = HCF(781,491) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 867 > 1, we apply the division lemma to 867 and 1, to get
867 = 1 x 867 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 867 is 1
Notice that 1 = HCF(867,1) .
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 491, 781, 867?
Answer: HCF of 491, 781, 867 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 491, 781, 867 using Euclid's Algorithm?
Answer: For arbitrary numbers 491, 781, 867 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.