Highest Common Factor of 640, 791, 438 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 640, 791, 438 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 640, 791, 438 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 640, 791, 438 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 640, 791, 438 is 1.
HCF(640, 791, 438) = 1
HCF of 640, 791, 438 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 640, 791, 438 is 1.
Highest Common Factor of 640,791,438 is 1
Step 1: Since 791 > 640, we apply the division lemma to 791 and 640, to get
791 = 640 x 1 + 151
Step 2: Since the reminder 640 ≠ 0, we apply division lemma to 151 and 640, to get
640 = 151 x 4 + 36
Step 3: We consider the new divisor 151 and the new remainder 36, and apply the division lemma to get
151 = 36 x 4 + 7
We consider the new divisor 36 and the new remainder 7,and apply the division lemma to get
36 = 7 x 5 + 1
We consider the new divisor 7 and the new remainder 1,and apply the division lemma to get
7 = 1 x 7 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 640 and 791 is 1
Notice that 1 = HCF(7,1) = HCF(36,7) = HCF(151,36) = HCF(640,151) = HCF(791,640) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 438 > 1, we apply the division lemma to 438 and 1, to get
438 = 1 x 438 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 438 is 1
Notice that 1 = HCF(438,1) .
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Frequently Asked Questions on HCF of 640, 791, 438 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 640, 791, 438?
Answer: HCF of 640, 791, 438 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 640, 791, 438 using Euclid's Algorithm?
Answer: For arbitrary numbers 640, 791, 438 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.