Highest Common Factor of 644, 242 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 644, 242 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 644, 242 is 2 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 644, 242 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 644, 242 is 2.
HCF(644, 242) = 2
HCF of 644, 242 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 644, 242 is 2.
Highest Common Factor of 644,242 is 2
Step 1: Since 644 > 242, we apply the division lemma to 644 and 242, to get
644 = 242 x 2 + 160
Step 2: Since the reminder 242 ≠ 0, we apply division lemma to 160 and 242, to get
242 = 160 x 1 + 82
Step 3: We consider the new divisor 160 and the new remainder 82, and apply the division lemma to get
160 = 82 x 1 + 78
We consider the new divisor 82 and the new remainder 78,and apply the division lemma to get
82 = 78 x 1 + 4
We consider the new divisor 78 and the new remainder 4,and apply the division lemma to get
78 = 4 x 19 + 2
We consider the new divisor 4 and the new remainder 2,and apply the division lemma to get
4 = 2 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 644 and 242 is 2
Notice that 2 = HCF(4,2) = HCF(78,4) = HCF(82,78) = HCF(160,82) = HCF(242,160) = HCF(644,242) .
HCF using Euclid's Algorithm Calculation Examples
Here are some samples of HCF using Euclid's Algorithm calculations.
Frequently Asked Questions on HCF of 644, 242 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 644, 242?
Answer: HCF of 644, 242 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 644, 242 using Euclid's Algorithm?
Answer: For arbitrary numbers 644, 242 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.