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 285, 649 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 285, 649 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 285, 649 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 285, 649 is 1.
HCF(285, 649) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 285, 649 is 1.
Step 1: Since 649 > 285, we apply the division lemma to 649 and 285, to get
649 = 285 x 2 + 79
Step 2: Since the reminder 285 ≠ 0, we apply division lemma to 79 and 285, to get
285 = 79 x 3 + 48
Step 3: We consider the new divisor 79 and the new remainder 48, and apply the division lemma to get
79 = 48 x 1 + 31
We consider the new divisor 48 and the new remainder 31,and apply the division lemma to get
48 = 31 x 1 + 17
We consider the new divisor 31 and the new remainder 17,and apply the division lemma to get
31 = 17 x 1 + 14
We consider the new divisor 17 and the new remainder 14,and apply the division lemma to get
17 = 14 x 1 + 3
We consider the new divisor 14 and the new remainder 3,and apply the division lemma to get
14 = 3 x 4 + 2
We consider the new divisor 3 and the new remainder 2,and apply the division lemma to get
3 = 2 x 1 + 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 285 and 649 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(14,3) = HCF(17,14) = HCF(31,17) = HCF(48,31) = HCF(79,48) = HCF(285,79) = HCF(649,285) .
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 285, 649?
Answer: HCF of 285, 649 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 285, 649 using Euclid's Algorithm?
Answer: For arbitrary numbers 285, 649 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.