Highest Common Factor of 170, 390, 86, 777 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 170, 390, 86, 777 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 170, 390, 86, 777 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 170, 390, 86, 777 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 170, 390, 86, 777 is 1.
HCF(170, 390, 86, 777) = 1
HCF of 170, 390, 86, 777 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 170, 390, 86, 777 is 1.
Highest Common Factor of 170,390,86,777 is 1
Step 1: Since 390 > 170, we apply the division lemma to 390 and 170, to get
390 = 170 x 2 + 50
Step 2: Since the reminder 170 ≠ 0, we apply division lemma to 50 and 170, to get
170 = 50 x 3 + 20
Step 3: We consider the new divisor 50 and the new remainder 20, and apply the division lemma to get
50 = 20 x 2 + 10
We consider the new divisor 20 and the new remainder 10, and apply the division lemma to get
20 = 10 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 10, the HCF of 170 and 390 is 10
Notice that 10 = HCF(20,10) = HCF(50,20) = HCF(170,50) = HCF(390,170) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 86 > 10, we apply the division lemma to 86 and 10, to get
86 = 10 x 8 + 6
Step 2: Since the reminder 10 ≠ 0, we apply division lemma to 6 and 10, to get
10 = 6 x 1 + 4
Step 3: We consider the new divisor 6 and the new remainder 4, and apply the division lemma to get
6 = 4 x 1 + 2
We consider the new divisor 4 and the new remainder 2, and apply the division lemma to get
4 = 2 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 10 and 86 is 2
Notice that 2 = HCF(4,2) = HCF(6,4) = HCF(10,6) = HCF(86,10) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 777 > 2, we apply the division lemma to 777 and 2, to get
777 = 2 x 388 + 1
Step 2: Since the reminder 2 ≠ 0, we apply division lemma to 1 and 2, 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 2 and 777 is 1
Notice that 1 = HCF(2,1) = HCF(777,2) .
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Frequently Asked Questions on HCF of 170, 390, 86, 777 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 170, 390, 86, 777?
Answer: HCF of 170, 390, 86, 777 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 170, 390, 86, 777 using Euclid's Algorithm?
Answer: For arbitrary numbers 170, 390, 86, 777 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.