Highest Common Factor of 656, 289, 978 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 656, 289, 978 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 656, 289, 978 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 656, 289, 978 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 656, 289, 978 is 1.
HCF(656, 289, 978) = 1
HCF of 656, 289, 978 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 656, 289, 978 is 1.
Highest Common Factor of 656,289,978 is 1
Step 1: Since 656 > 289, we apply the division lemma to 656 and 289, to get
656 = 289 x 2 + 78
Step 2: Since the reminder 289 ≠ 0, we apply division lemma to 78 and 289, to get
289 = 78 x 3 + 55
Step 3: We consider the new divisor 78 and the new remainder 55, and apply the division lemma to get
78 = 55 x 1 + 23
We consider the new divisor 55 and the new remainder 23,and apply the division lemma to get
55 = 23 x 2 + 9
We consider the new divisor 23 and the new remainder 9,and apply the division lemma to get
23 = 9 x 2 + 5
We consider the new divisor 9 and the new remainder 5,and apply the division lemma to get
9 = 5 x 1 + 4
We consider the new divisor 5 and the new remainder 4,and apply the division lemma to get
5 = 4 x 1 + 1
We consider the new divisor 4 and the new remainder 1,and apply the division lemma to get
4 = 1 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 656 and 289 is 1
Notice that 1 = HCF(4,1) = HCF(5,4) = HCF(9,5) = HCF(23,9) = HCF(55,23) = HCF(78,55) = HCF(289,78) = HCF(656,289) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 978 > 1, we apply the division lemma to 978 and 1, to get
978 = 1 x 978 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 978 is 1
Notice that 1 = HCF(978,1) .
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Frequently Asked Questions on HCF of 656, 289, 978 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 656, 289, 978?
Answer: HCF of 656, 289, 978 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 656, 289, 978 using Euclid's Algorithm?
Answer: For arbitrary numbers 656, 289, 978 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.