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 342, 123, 256 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 342, 123, 256 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 342, 123, 256 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 342, 123, 256 is 1.
HCF(342, 123, 256) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 342, 123, 256 is 1.
Step 1: Since 342 > 123, we apply the division lemma to 342 and 123, to get
342 = 123 x 2 + 96
Step 2: Since the reminder 123 ≠ 0, we apply division lemma to 96 and 123, to get
123 = 96 x 1 + 27
Step 3: We consider the new divisor 96 and the new remainder 27, and apply the division lemma to get
96 = 27 x 3 + 15
We consider the new divisor 27 and the new remainder 15,and apply the division lemma to get
27 = 15 x 1 + 12
We consider the new divisor 15 and the new remainder 12,and apply the division lemma to get
15 = 12 x 1 + 3
We consider the new divisor 12 and the new remainder 3,and apply the division lemma to get
12 = 3 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 342 and 123 is 3
Notice that 3 = HCF(12,3) = HCF(15,12) = HCF(27,15) = HCF(96,27) = HCF(123,96) = HCF(342,123) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 256 > 3, we apply the division lemma to 256 and 3, to get
256 = 3 x 85 + 1
Step 2: Since the reminder 3 ≠ 0, we apply division lemma to 1 and 3, to get
3 = 1 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 3 and 256 is 1
Notice that 1 = HCF(3,1) = HCF(256,3) .
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 342, 123, 256?
Answer: HCF of 342, 123, 256 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 342, 123, 256 using Euclid's Algorithm?
Answer: For arbitrary numbers 342, 123, 256 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.