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 815, 638, 622 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 815, 638, 622 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 815, 638, 622 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 815, 638, 622 is 1.
HCF(815, 638, 622) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 815, 638, 622 is 1.
Step 1: Since 815 > 638, we apply the division lemma to 815 and 638, to get
815 = 638 x 1 + 177
Step 2: Since the reminder 638 ≠ 0, we apply division lemma to 177 and 638, to get
638 = 177 x 3 + 107
Step 3: We consider the new divisor 177 and the new remainder 107, and apply the division lemma to get
177 = 107 x 1 + 70
We consider the new divisor 107 and the new remainder 70,and apply the division lemma to get
107 = 70 x 1 + 37
We consider the new divisor 70 and the new remainder 37,and apply the division lemma to get
70 = 37 x 1 + 33
We consider the new divisor 37 and the new remainder 33,and apply the division lemma to get
37 = 33 x 1 + 4
We consider the new divisor 33 and the new remainder 4,and apply the division lemma to get
33 = 4 x 8 + 1
We consider the new divisor 4 and the new remainder 1,and apply the division lemma to get
4 = 1 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 815 and 638 is 1
Notice that 1 = HCF(4,1) = HCF(33,4) = HCF(37,33) = HCF(70,37) = HCF(107,70) = HCF(177,107) = HCF(638,177) = HCF(815,638) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 622 > 1, we apply the division lemma to 622 and 1, to get
622 = 1 x 622 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 622 is 1
Notice that 1 = HCF(622,1) .
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 815, 638, 622?
Answer: HCF of 815, 638, 622 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 815, 638, 622 using Euclid's Algorithm?
Answer: For arbitrary numbers 815, 638, 622 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.