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 154, 572, 123 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 154, 572, 123 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 154, 572, 123 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 154, 572, 123 is 1.
HCF(154, 572, 123) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 154, 572, 123 is 1.
Step 1: Since 572 > 154, we apply the division lemma to 572 and 154, to get
572 = 154 x 3 + 110
Step 2: Since the reminder 154 ≠ 0, we apply division lemma to 110 and 154, to get
154 = 110 x 1 + 44
Step 3: We consider the new divisor 110 and the new remainder 44, and apply the division lemma to get
110 = 44 x 2 + 22
We consider the new divisor 44 and the new remainder 22, and apply the division lemma to get
44 = 22 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 22, the HCF of 154 and 572 is 22
Notice that 22 = HCF(44,22) = HCF(110,44) = HCF(154,110) = HCF(572,154) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 123 > 22, we apply the division lemma to 123 and 22, to get
123 = 22 x 5 + 13
Step 2: Since the reminder 22 ≠ 0, we apply division lemma to 13 and 22, to get
22 = 13 x 1 + 9
Step 3: We consider the new divisor 13 and the new remainder 9, and apply the division lemma to get
13 = 9 x 1 + 4
We consider the new divisor 9 and the new remainder 4,and apply the division lemma to get
9 = 4 x 2 + 1
We consider the new divisor 4 and the new remainder 1,and apply the division lemma 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 22 and 123 is 1
Notice that 1 = HCF(4,1) = HCF(9,4) = HCF(13,9) = HCF(22,13) = HCF(123,22) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 154, 572, 123?
Answer: HCF of 154, 572, 123 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 154, 572, 123 using Euclid's Algorithm?
Answer: For arbitrary numbers 154, 572, 123 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.