Highest Common Factor of 851, 685 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 851, 685 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 851, 685 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 851, 685 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 851, 685 is 1.
HCF(851, 685) = 1
HCF of 851, 685 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 851, 685 is 1.
Highest Common Factor of 851,685 is 1
Step 1: Since 851 > 685, we apply the division lemma to 851 and 685, to get
851 = 685 x 1 + 166
Step 2: Since the reminder 685 ≠ 0, we apply division lemma to 166 and 685, to get
685 = 166 x 4 + 21
Step 3: We consider the new divisor 166 and the new remainder 21, and apply the division lemma to get
166 = 21 x 7 + 19
We consider the new divisor 21 and the new remainder 19,and apply the division lemma to get
21 = 19 x 1 + 2
We consider the new divisor 19 and the new remainder 2,and apply the division lemma to get
19 = 2 x 9 + 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 851 and 685 is 1
Notice that 1 = HCF(2,1) = HCF(19,2) = HCF(21,19) = HCF(166,21) = HCF(685,166) = HCF(851,685) .
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Frequently Asked Questions on HCF of 851, 685 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 851, 685?
Answer: HCF of 851, 685 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 851, 685 using Euclid's Algorithm?
Answer: For arbitrary numbers 851, 685 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.