Highest Common Factor of 781, 427, 857 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 781, 427, 857 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 781, 427, 857 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 781, 427, 857 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 781, 427, 857 is 1.
HCF(781, 427, 857) = 1
HCF of 781, 427, 857 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 781, 427, 857 is 1.
Highest Common Factor of 781,427,857 is 1
Step 1: Since 781 > 427, we apply the division lemma to 781 and 427, to get
781 = 427 x 1 + 354
Step 2: Since the reminder 427 ≠ 0, we apply division lemma to 354 and 427, to get
427 = 354 x 1 + 73
Step 3: We consider the new divisor 354 and the new remainder 73, and apply the division lemma to get
354 = 73 x 4 + 62
We consider the new divisor 73 and the new remainder 62,and apply the division lemma to get
73 = 62 x 1 + 11
We consider the new divisor 62 and the new remainder 11,and apply the division lemma to get
62 = 11 x 5 + 7
We consider the new divisor 11 and the new remainder 7,and apply the division lemma to get
11 = 7 x 1 + 4
We consider the new divisor 7 and the new remainder 4,and apply the division lemma to get
7 = 4 x 1 + 3
We consider the new divisor 4 and the new remainder 3,and apply the division lemma to get
4 = 3 x 1 + 1
We consider the new divisor 3 and the new remainder 1,and apply the division lemma to get
3 = 1 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 781 and 427 is 1
Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(7,4) = HCF(11,7) = HCF(62,11) = HCF(73,62) = HCF(354,73) = HCF(427,354) = HCF(781,427) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 857 > 1, we apply the division lemma to 857 and 1, to get
857 = 1 x 857 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 857 is 1
Notice that 1 = HCF(857,1) .
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Frequently Asked Questions on HCF of 781, 427, 857 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 781, 427, 857?
Answer: HCF of 781, 427, 857 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 781, 427, 857 using Euclid's Algorithm?
Answer: For arbitrary numbers 781, 427, 857 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.
