Highest Common Factor of 621, 400 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 621, 400 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 621, 400 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 621, 400 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 621, 400 is 1.
HCF(621, 400) = 1
HCF of 621, 400 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 621, 400 is 1.
Highest Common Factor of 621,400 is 1
Step 1: Since 621 > 400, we apply the division lemma to 621 and 400, to get
621 = 400 x 1 + 221
Step 2: Since the reminder 400 ≠ 0, we apply division lemma to 221 and 400, to get
400 = 221 x 1 + 179
Step 3: We consider the new divisor 221 and the new remainder 179, and apply the division lemma to get
221 = 179 x 1 + 42
We consider the new divisor 179 and the new remainder 42,and apply the division lemma to get
179 = 42 x 4 + 11
We consider the new divisor 42 and the new remainder 11,and apply the division lemma to get
42 = 11 x 3 + 9
We consider the new divisor 11 and the new remainder 9,and apply the division lemma to get
11 = 9 x 1 + 2
We consider the new divisor 9 and the new remainder 2,and apply the division lemma to get
9 = 2 x 4 + 1
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 621 and 400 is 1
Notice that 1 = HCF(2,1) = HCF(9,2) = HCF(11,9) = HCF(42,11) = HCF(179,42) = HCF(221,179) = HCF(400,221) = HCF(621,400) .
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Frequently Asked Questions on HCF of 621, 400 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 621, 400?
Answer: HCF of 621, 400 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 621, 400 using Euclid's Algorithm?
Answer: For arbitrary numbers 621, 400 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.