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 645, 274, 866 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 645, 274, 866 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 645, 274, 866 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 645, 274, 866 is 1.
HCF(645, 274, 866) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 645, 274, 866 is 1.
Step 1: Since 645 > 274, we apply the division lemma to 645 and 274, to get
645 = 274 x 2 + 97
Step 2: Since the reminder 274 ≠ 0, we apply division lemma to 97 and 274, to get
274 = 97 x 2 + 80
Step 3: We consider the new divisor 97 and the new remainder 80, and apply the division lemma to get
97 = 80 x 1 + 17
We consider the new divisor 80 and the new remainder 17,and apply the division lemma to get
80 = 17 x 4 + 12
We consider the new divisor 17 and the new remainder 12,and apply the division lemma to get
17 = 12 x 1 + 5
We consider the new divisor 12 and the new remainder 5,and apply the division lemma to get
12 = 5 x 2 + 2
We consider the new divisor 5 and the new remainder 2,and apply the division lemma to get
5 = 2 x 2 + 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 645 and 274 is 1
Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(12,5) = HCF(17,12) = HCF(80,17) = HCF(97,80) = HCF(274,97) = HCF(645,274) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 866 > 1, we apply the division lemma to 866 and 1, to get
866 = 1 x 866 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 866 is 1
Notice that 1 = HCF(866,1) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 645, 274, 866?
Answer: HCF of 645, 274, 866 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 645, 274, 866 using Euclid's Algorithm?
Answer: For arbitrary numbers 645, 274, 866 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.