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 157, 9686, 1974 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 157, 9686, 1974 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 157, 9686, 1974 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 157, 9686, 1974 is 1.
HCF(157, 9686, 1974) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 157, 9686, 1974 is 1.
Step 1: Since 9686 > 157, we apply the division lemma to 9686 and 157, to get
9686 = 157 x 61 + 109
Step 2: Since the reminder 157 ≠ 0, we apply division lemma to 109 and 157, to get
157 = 109 x 1 + 48
Step 3: We consider the new divisor 109 and the new remainder 48, and apply the division lemma to get
109 = 48 x 2 + 13
We consider the new divisor 48 and the new remainder 13,and apply the division lemma to get
48 = 13 x 3 + 9
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 157 and 9686 is 1
Notice that 1 = HCF(4,1) = HCF(9,4) = HCF(13,9) = HCF(48,13) = HCF(109,48) = HCF(157,109) = HCF(9686,157) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 1974 > 1, we apply the division lemma to 1974 and 1, to get
1974 = 1 x 1974 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 1974 is 1
Notice that 1 = HCF(1974,1) .
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 157, 9686, 1974?
Answer: HCF of 157, 9686, 1974 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 157, 9686, 1974 using Euclid's Algorithm?
Answer: For arbitrary numbers 157, 9686, 1974 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.