Highest Common Factor of 813, 642, 285 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 813, 642, 285 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 813, 642, 285 is 3 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 813, 642, 285 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 813, 642, 285 is 3.
HCF(813, 642, 285) = 3
HCF of 813, 642, 285 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 813, 642, 285 is 3.
Highest Common Factor of 813,642,285 is 3
Step 1: Since 813 > 642, we apply the division lemma to 813 and 642, to get
813 = 642 x 1 + 171
Step 2: Since the reminder 642 ≠ 0, we apply division lemma to 171 and 642, to get
642 = 171 x 3 + 129
Step 3: We consider the new divisor 171 and the new remainder 129, and apply the division lemma to get
171 = 129 x 1 + 42
We consider the new divisor 129 and the new remainder 42,and apply the division lemma to get
129 = 42 x 3 + 3
We consider the new divisor 42 and the new remainder 3,and apply the division lemma to get
42 = 3 x 14 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 813 and 642 is 3
Notice that 3 = HCF(42,3) = HCF(129,42) = HCF(171,129) = HCF(642,171) = HCF(813,642) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 285 > 3, we apply the division lemma to 285 and 3, to get
285 = 3 x 95 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 3 and 285 is 3
Notice that 3 = HCF(285,3) .
HCF using Euclid's Algorithm Calculation Examples
Here are some samples of HCF using Euclid's Algorithm calculations.
Frequently Asked Questions on HCF of 813, 642, 285 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 813, 642, 285?
Answer: HCF of 813, 642, 285 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 813, 642, 285 using Euclid's Algorithm?
Answer: For arbitrary numbers 813, 642, 285 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.