Highest Common Factor of 555, 170, 646 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 555, 170, 646 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 555, 170, 646 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 555, 170, 646 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 555, 170, 646 is 1.
HCF(555, 170, 646) = 1
HCF of 555, 170, 646 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 555, 170, 646 is 1.
Highest Common Factor of 555,170,646 is 1
Step 1: Since 555 > 170, we apply the division lemma to 555 and 170, to get
555 = 170 x 3 + 45
Step 2: Since the reminder 170 ≠ 0, we apply division lemma to 45 and 170, to get
170 = 45 x 3 + 35
Step 3: We consider the new divisor 45 and the new remainder 35, and apply the division lemma to get
45 = 35 x 1 + 10
We consider the new divisor 35 and the new remainder 10,and apply the division lemma to get
35 = 10 x 3 + 5
We consider the new divisor 10 and the new remainder 5,and apply the division lemma to get
10 = 5 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 555 and 170 is 5
Notice that 5 = HCF(10,5) = HCF(35,10) = HCF(45,35) = HCF(170,45) = HCF(555,170) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 646 > 5, we apply the division lemma to 646 and 5, to get
646 = 5 x 129 + 1
Step 2: Since the reminder 5 ≠ 0, we apply division lemma to 1 and 5, to get
5 = 1 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 5 and 646 is 1
Notice that 1 = HCF(5,1) = HCF(646,5) .
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Frequently Asked Questions on HCF of 555, 170, 646 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 555, 170, 646?
Answer: HCF of 555, 170, 646 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 555, 170, 646 using Euclid's Algorithm?
Answer: For arbitrary numbers 555, 170, 646 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.