Highest Common Factor of 23, 85, 17, 658 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 23, 85, 17, 658 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 23, 85, 17, 658 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 23, 85, 17, 658 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 23, 85, 17, 658 is 1.
HCF(23, 85, 17, 658) = 1
HCF of 23, 85, 17, 658 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 23, 85, 17, 658 is 1.
Highest Common Factor of 23,85,17,658 is 1
Step 1: Since 85 > 23, we apply the division lemma to 85 and 23, to get
85 = 23 x 3 + 16
Step 2: Since the reminder 23 ≠ 0, we apply division lemma to 16 and 23, to get
23 = 16 x 1 + 7
Step 3: We consider the new divisor 16 and the new remainder 7, and apply the division lemma to get
16 = 7 x 2 + 2
We consider the new divisor 7 and the new remainder 2,and apply the division lemma to get
7 = 2 x 3 + 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 23 and 85 is 1
Notice that 1 = HCF(2,1) = HCF(7,2) = HCF(16,7) = HCF(23,16) = HCF(85,23) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 17 > 1, we apply the division lemma to 17 and 1, to get
17 = 1 x 17 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 17 is 1
Notice that 1 = HCF(17,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 658 > 1, we apply the division lemma to 658 and 1, to get
658 = 1 x 658 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 658 is 1
Notice that 1 = HCF(658,1) .
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Frequently Asked Questions on HCF of 23, 85, 17, 658 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 23, 85, 17, 658?
Answer: HCF of 23, 85, 17, 658 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 23, 85, 17, 658 using Euclid's Algorithm?
Answer: For arbitrary numbers 23, 85, 17, 658 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.