Highest Common Factor of 77, 20, 657, 151 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 77, 20, 657, 151 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 77, 20, 657, 151 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 77, 20, 657, 151 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 77, 20, 657, 151 is 1.
HCF(77, 20, 657, 151) = 1
HCF of 77, 20, 657, 151 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 77, 20, 657, 151 is 1.
Highest Common Factor of 77,20,657,151 is 1
Step 1: Since 77 > 20, we apply the division lemma to 77 and 20, to get
77 = 20 x 3 + 17
Step 2: Since the reminder 20 ≠ 0, we apply division lemma to 17 and 20, to get
20 = 17 x 1 + 3
Step 3: We consider the new divisor 17 and the new remainder 3, and apply the division lemma to get
17 = 3 x 5 + 2
We consider the new divisor 3 and the new remainder 2,and apply the division lemma to get
3 = 2 x 1 + 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 77 and 20 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(17,3) = HCF(20,17) = HCF(77,20) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 657 > 1, we apply the division lemma to 657 and 1, to get
657 = 1 x 657 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 657 is 1
Notice that 1 = HCF(657,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 151 > 1, we apply the division lemma to 151 and 1, to get
151 = 1 x 151 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 151 is 1
Notice that 1 = HCF(151,1) .
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Frequently Asked Questions on HCF of 77, 20, 657, 151 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 77, 20, 657, 151?
Answer: HCF of 77, 20, 657, 151 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 77, 20, 657, 151 using Euclid's Algorithm?
Answer: For arbitrary numbers 77, 20, 657, 151 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.