Highest Common Factor of 123, 820, 778, 641 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 123, 820, 778, 641 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 123, 820, 778, 641 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 123, 820, 778, 641 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 123, 820, 778, 641 is 1.
HCF(123, 820, 778, 641) = 1
HCF of 123, 820, 778, 641 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 123, 820, 778, 641 is 1.
Highest Common Factor of 123,820,778,641 is 1
Step 1: Since 820 > 123, we apply the division lemma to 820 and 123, to get
820 = 123 x 6 + 82
Step 2: Since the reminder 123 ≠ 0, we apply division lemma to 82 and 123, to get
123 = 82 x 1 + 41
Step 3: We consider the new divisor 82 and the new remainder 41, and apply the division lemma to get
82 = 41 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 41, the HCF of 123 and 820 is 41
Notice that 41 = HCF(82,41) = HCF(123,82) = HCF(820,123) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 778 > 41, we apply the division lemma to 778 and 41, to get
778 = 41 x 18 + 40
Step 2: Since the reminder 41 ≠ 0, we apply division lemma to 40 and 41, to get
41 = 40 x 1 + 1
Step 3: We consider the new divisor 40 and the new remainder 1, and apply the division lemma to get
40 = 1 x 40 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 41 and 778 is 1
Notice that 1 = HCF(40,1) = HCF(41,40) = HCF(778,41) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 641 > 1, we apply the division lemma to 641 and 1, to get
641 = 1 x 641 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 641 is 1
Notice that 1 = HCF(641,1) .
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Frequently Asked Questions on HCF of 123, 820, 778, 641 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 123, 820, 778, 641?
Answer: HCF of 123, 820, 778, 641 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 123, 820, 778, 641 using Euclid's Algorithm?
Answer: For arbitrary numbers 123, 820, 778, 641 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.