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, 505, 999 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 813, 505, 999 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 813, 505, 999 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, 505, 999 is 1.
HCF(813, 505, 999) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 813, 505, 999 is 1.
Step 1: Since 813 > 505, we apply the division lemma to 813 and 505, to get
813 = 505 x 1 + 308
Step 2: Since the reminder 505 ≠ 0, we apply division lemma to 308 and 505, to get
505 = 308 x 1 + 197
Step 3: We consider the new divisor 308 and the new remainder 197, and apply the division lemma to get
308 = 197 x 1 + 111
We consider the new divisor 197 and the new remainder 111,and apply the division lemma to get
197 = 111 x 1 + 86
We consider the new divisor 111 and the new remainder 86,and apply the division lemma to get
111 = 86 x 1 + 25
We consider the new divisor 86 and the new remainder 25,and apply the division lemma to get
86 = 25 x 3 + 11
We consider the new divisor 25 and the new remainder 11,and apply the division lemma to get
25 = 11 x 2 + 3
We consider the new divisor 11 and the new remainder 3,and apply the division lemma to get
11 = 3 x 3 + 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 813 and 505 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(11,3) = HCF(25,11) = HCF(86,25) = HCF(111,86) = HCF(197,111) = HCF(308,197) = HCF(505,308) = HCF(813,505) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 999 > 1, we apply the division lemma to 999 and 1, to get
999 = 1 x 999 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 999 is 1
Notice that 1 = HCF(999,1) .
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 813, 505, 999?
Answer: HCF of 813, 505, 999 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 813, 505, 999 using Euclid's Algorithm?
Answer: For arbitrary numbers 813, 505, 999 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.