Highest Common Factor of 177, 393, 621 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 177, 393, 621 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 177, 393, 621 is 3 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 177, 393, 621 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 177, 393, 621 is 3.
HCF(177, 393, 621) = 3
HCF of 177, 393, 621 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 177, 393, 621 is 3.
Highest Common Factor of 177,393,621 is 3
Step 1: Since 393 > 177, we apply the division lemma to 393 and 177, to get
393 = 177 x 2 + 39
Step 2: Since the reminder 177 ≠ 0, we apply division lemma to 39 and 177, to get
177 = 39 x 4 + 21
Step 3: We consider the new divisor 39 and the new remainder 21, and apply the division lemma to get
39 = 21 x 1 + 18
We consider the new divisor 21 and the new remainder 18,and apply the division lemma to get
21 = 18 x 1 + 3
We consider the new divisor 18 and the new remainder 3,and apply the division lemma to get
18 = 3 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 177 and 393 is 3
Notice that 3 = HCF(18,3) = HCF(21,18) = HCF(39,21) = HCF(177,39) = HCF(393,177) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 621 > 3, we apply the division lemma to 621 and 3, to get
621 = 3 x 207 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 3 and 621 is 3
Notice that 3 = HCF(621,3) .
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Frequently Asked Questions on HCF of 177, 393, 621 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 177, 393, 621?
Answer: HCF of 177, 393, 621 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 177, 393, 621 using Euclid's Algorithm?
Answer: For arbitrary numbers 177, 393, 621 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.