Highest Common Factor of 447, 725, 20, 645 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 447, 725, 20, 645 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 447, 725, 20, 645 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 447, 725, 20, 645 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 447, 725, 20, 645 is 1.
HCF(447, 725, 20, 645) = 1
HCF of 447, 725, 20, 645 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 447, 725, 20, 645 is 1.
Highest Common Factor of 447,725,20,645 is 1
Step 1: Since 725 > 447, we apply the division lemma to 725 and 447, to get
725 = 447 x 1 + 278
Step 2: Since the reminder 447 ≠ 0, we apply division lemma to 278 and 447, to get
447 = 278 x 1 + 169
Step 3: We consider the new divisor 278 and the new remainder 169, and apply the division lemma to get
278 = 169 x 1 + 109
We consider the new divisor 169 and the new remainder 109,and apply the division lemma to get
169 = 109 x 1 + 60
We consider the new divisor 109 and the new remainder 60,and apply the division lemma to get
109 = 60 x 1 + 49
We consider the new divisor 60 and the new remainder 49,and apply the division lemma to get
60 = 49 x 1 + 11
We consider the new divisor 49 and the new remainder 11,and apply the division lemma to get
49 = 11 x 4 + 5
We consider the new divisor 11 and the new remainder 5,and apply the division lemma to get
11 = 5 x 2 + 1
We consider the new divisor 5 and the new remainder 1,and apply the division lemma to get
5 = 1 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 447 and 725 is 1
Notice that 1 = HCF(5,1) = HCF(11,5) = HCF(49,11) = HCF(60,49) = HCF(109,60) = HCF(169,109) = HCF(278,169) = HCF(447,278) = HCF(725,447) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 20 > 1, we apply the division lemma to 20 and 1, to get
20 = 1 x 20 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 20 is 1
Notice that 1 = HCF(20,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 645 > 1, we apply the division lemma to 645 and 1, to get
645 = 1 x 645 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 645 is 1
Notice that 1 = HCF(645,1) .
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Frequently Asked Questions on HCF of 447, 725, 20, 645 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 447, 725, 20, 645?
Answer: HCF of 447, 725, 20, 645 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 447, 725, 20, 645 using Euclid's Algorithm?
Answer: For arbitrary numbers 447, 725, 20, 645 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.