Highest Common Factor of 649, 357, 523, 821 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 649, 357, 523, 821 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 649, 357, 523, 821 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 649, 357, 523, 821 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 649, 357, 523, 821 is 1.
HCF(649, 357, 523, 821) = 1
HCF of 649, 357, 523, 821 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 649, 357, 523, 821 is 1.
Highest Common Factor of 649,357,523,821 is 1
Step 1: Since 649 > 357, we apply the division lemma to 649 and 357, to get
649 = 357 x 1 + 292
Step 2: Since the reminder 357 ≠ 0, we apply division lemma to 292 and 357, to get
357 = 292 x 1 + 65
Step 3: We consider the new divisor 292 and the new remainder 65, and apply the division lemma to get
292 = 65 x 4 + 32
We consider the new divisor 65 and the new remainder 32,and apply the division lemma to get
65 = 32 x 2 + 1
We consider the new divisor 32 and the new remainder 1,and apply the division lemma to get
32 = 1 x 32 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 649 and 357 is 1
Notice that 1 = HCF(32,1) = HCF(65,32) = HCF(292,65) = HCF(357,292) = HCF(649,357) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 523 > 1, we apply the division lemma to 523 and 1, to get
523 = 1 x 523 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 523 is 1
Notice that 1 = HCF(523,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 821 > 1, we apply the division lemma to 821 and 1, to get
821 = 1 x 821 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 821 is 1
Notice that 1 = HCF(821,1) .
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Frequently Asked Questions on HCF of 649, 357, 523, 821 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 649, 357, 523, 821?
Answer: HCF of 649, 357, 523, 821 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 649, 357, 523, 821 using Euclid's Algorithm?
Answer: For arbitrary numbers 649, 357, 523, 821 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.