Highest Common Factor of 649, 1261 using Euclid's algorithm
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 649, 1261 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 649, 1261 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 649, 1261 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 649, 1261 is 1.
HCF(649, 1261) = 1
HCF of 649, 1261 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 649, 1261 is 1.
Highest Common Factor of 649,1261 is 1
Step 1: Since 1261 > 649, we apply the division lemma to 1261 and 649, to get
1261 = 649 x 1 + 612
Step 2: Since the reminder 649 ≠ 0, we apply division lemma to 612 and 649, to get
649 = 612 x 1 + 37
Step 3: We consider the new divisor 612 and the new remainder 37, and apply the division lemma to get
612 = 37 x 16 + 20
We consider the new divisor 37 and the new remainder 20,and apply the division lemma to get
37 = 20 x 1 + 17
We consider the new divisor 20 and the new remainder 17,and apply the division lemma to get
20 = 17 x 1 + 3
We consider the new divisor 17 and the new remainder 3,and apply the division lemma to get
17 = 3 x 5 + 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 649 and 1261 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(17,3) = HCF(20,17) = HCF(37,20) = HCF(612,37) = HCF(649,612) = HCF(1261,649) .
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Frequently Asked Questions on HCF of 649, 1261 using Euclid's Algorithm
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 649, 1261?
Answer: HCF of 649, 1261 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 649, 1261 using Euclid's Algorithm?
Answer: For arbitrary numbers 649, 1261 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.