Highest Common Factor of 424, 148, 685 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 424, 148, 685 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 424, 148, 685 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 424, 148, 685 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 424, 148, 685 is 1.
HCF(424, 148, 685) = 1
HCF of 424, 148, 685 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 424, 148, 685 is 1.
Highest Common Factor of 424,148,685 is 1
Step 1: Since 424 > 148, we apply the division lemma to 424 and 148, to get
424 = 148 x 2 + 128
Step 2: Since the reminder 148 ≠ 0, we apply division lemma to 128 and 148, to get
148 = 128 x 1 + 20
Step 3: We consider the new divisor 128 and the new remainder 20, and apply the division lemma to get
128 = 20 x 6 + 8
We consider the new divisor 20 and the new remainder 8,and apply the division lemma to get
20 = 8 x 2 + 4
We consider the new divisor 8 and the new remainder 4,and apply the division lemma to get
8 = 4 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 4, the HCF of 424 and 148 is 4
Notice that 4 = HCF(8,4) = HCF(20,8) = HCF(128,20) = HCF(148,128) = HCF(424,148) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 685 > 4, we apply the division lemma to 685 and 4, to get
685 = 4 x 171 + 1
Step 2: Since the reminder 4 ≠ 0, we apply division lemma to 1 and 4, to get
4 = 1 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 4 and 685 is 1
Notice that 1 = HCF(4,1) = HCF(685,4) .
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Frequently Asked Questions on HCF of 424, 148, 685 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 424, 148, 685?
Answer: HCF of 424, 148, 685 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 424, 148, 685 using Euclid's Algorithm?
Answer: For arbitrary numbers 424, 148, 685 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.