Highest Common Factor of 643, 804, 197 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 643, 804, 197 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 643, 804, 197 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 643, 804, 197 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 643, 804, 197 is 1.
HCF(643, 804, 197) = 1
HCF of 643, 804, 197 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 643, 804, 197 is 1.
Highest Common Factor of 643,804,197 is 1
Step 1: Since 804 > 643, we apply the division lemma to 804 and 643, to get
804 = 643 x 1 + 161
Step 2: Since the reminder 643 ≠ 0, we apply division lemma to 161 and 643, to get
643 = 161 x 3 + 160
Step 3: We consider the new divisor 161 and the new remainder 160, and apply the division lemma to get
161 = 160 x 1 + 1
We consider the new divisor 160 and the new remainder 1, and apply the division lemma to get
160 = 1 x 160 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 643 and 804 is 1
Notice that 1 = HCF(160,1) = HCF(161,160) = HCF(643,161) = HCF(804,643) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 197 > 1, we apply the division lemma to 197 and 1, to get
197 = 1 x 197 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 197 is 1
Notice that 1 = HCF(197,1) .
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Frequently Asked Questions on HCF of 643, 804, 197 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 643, 804, 197?
Answer: HCF of 643, 804, 197 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 643, 804, 197 using Euclid's Algorithm?
Answer: For arbitrary numbers 643, 804, 197 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.