Highest Common Factor of 165, 621, 971 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 165, 621, 971 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 165, 621, 971 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 165, 621, 971 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 165, 621, 971 is 1.
HCF(165, 621, 971) = 1
HCF of 165, 621, 971 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 165, 621, 971 is 1.
Highest Common Factor of 165,621,971 is 1
Step 1: Since 621 > 165, we apply the division lemma to 621 and 165, to get
621 = 165 x 3 + 126
Step 2: Since the reminder 165 ≠ 0, we apply division lemma to 126 and 165, to get
165 = 126 x 1 + 39
Step 3: We consider the new divisor 126 and the new remainder 39, and apply the division lemma to get
126 = 39 x 3 + 9
We consider the new divisor 39 and the new remainder 9,and apply the division lemma to get
39 = 9 x 4 + 3
We consider the new divisor 9 and the new remainder 3,and apply the division lemma to get
9 = 3 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 165 and 621 is 3
Notice that 3 = HCF(9,3) = HCF(39,9) = HCF(126,39) = HCF(165,126) = HCF(621,165) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 971 > 3, we apply the division lemma to 971 and 3, to get
971 = 3 x 323 + 2
Step 2: Since the reminder 3 ≠ 0, we apply division lemma to 2 and 3, to get
3 = 2 x 1 + 1
Step 3: 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 3 and 971 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(971,3) .
HCF using Euclid's Algorithm Calculation Examples
Here are some samples of HCF using Euclid's Algorithm calculations.
Frequently Asked Questions on HCF of 165, 621, 971 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 165, 621, 971?
Answer: HCF of 165, 621, 971 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 165, 621, 971 using Euclid's Algorithm?
Answer: For arbitrary numbers 165, 621, 971 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.