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 121, 428, 446, 666 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 121, 428, 446, 666 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 121, 428, 446, 666 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 121, 428, 446, 666 is 1.
HCF(121, 428, 446, 666) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 121, 428, 446, 666 is 1.
Step 1: Since 428 > 121, we apply the division lemma to 428 and 121, to get
428 = 121 x 3 + 65
Step 2: Since the reminder 121 ≠ 0, we apply division lemma to 65 and 121, to get
121 = 65 x 1 + 56
Step 3: We consider the new divisor 65 and the new remainder 56, and apply the division lemma to get
65 = 56 x 1 + 9
We consider the new divisor 56 and the new remainder 9,and apply the division lemma to get
56 = 9 x 6 + 2
We consider the new divisor 9 and the new remainder 2,and apply the division lemma to get
9 = 2 x 4 + 1
We consider the new divisor 2 and the new remainder 1,and apply the division lemma 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 121 and 428 is 1
Notice that 1 = HCF(2,1) = HCF(9,2) = HCF(56,9) = HCF(65,56) = HCF(121,65) = HCF(428,121) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 446 > 1, we apply the division lemma to 446 and 1, to get
446 = 1 x 446 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 446 is 1
Notice that 1 = HCF(446,1) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 666 > 1, we apply the division lemma to 666 and 1, to get
666 = 1 x 666 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 666 is 1
Notice that 1 = HCF(666,1) .
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 121, 428, 446, 666?
Answer: HCF of 121, 428, 446, 666 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 121, 428, 446, 666 using Euclid's Algorithm?
Answer: For arbitrary numbers 121, 428, 446, 666 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.