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 31, 145, 163 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 31, 145, 163 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 31, 145, 163 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 31, 145, 163 is 1.
HCF(31, 145, 163) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 31, 145, 163 is 1.
Step 1: Since 145 > 31, we apply the division lemma to 145 and 31, to get
145 = 31 x 4 + 21
Step 2: Since the reminder 31 ≠ 0, we apply division lemma to 21 and 31, to get
31 = 21 x 1 + 10
Step 3: We consider the new divisor 21 and the new remainder 10, and apply the division lemma to get
21 = 10 x 2 + 1
We consider the new divisor 10 and the new remainder 1, and apply the division lemma to get
10 = 1 x 10 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 31 and 145 is 1
Notice that 1 = HCF(10,1) = HCF(21,10) = HCF(31,21) = HCF(145,31) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 163 > 1, we apply the division lemma to 163 and 1, to get
163 = 1 x 163 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 163 is 1
Notice that 1 = HCF(163,1) .
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 31, 145, 163?
Answer: HCF of 31, 145, 163 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 31, 145, 163 using Euclid's Algorithm?
Answer: For arbitrary numbers 31, 145, 163 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.