Highest Common Factor of 649, 990, 169 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, 990, 169 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 649, 990, 169 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, 990, 169 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, 990, 169 is 1.
HCF(649, 990, 169) = 1
HCF of 649, 990, 169 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, 990, 169 is 1.
Highest Common Factor of 649,990,169 is 1
Step 1: Since 990 > 649, we apply the division lemma to 990 and 649, to get
990 = 649 x 1 + 341
Step 2: Since the reminder 649 ≠ 0, we apply division lemma to 341 and 649, to get
649 = 341 x 1 + 308
Step 3: We consider the new divisor 341 and the new remainder 308, and apply the division lemma to get
341 = 308 x 1 + 33
We consider the new divisor 308 and the new remainder 33,and apply the division lemma to get
308 = 33 x 9 + 11
We consider the new divisor 33 and the new remainder 11,and apply the division lemma to get
33 = 11 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 11, the HCF of 649 and 990 is 11
Notice that 11 = HCF(33,11) = HCF(308,33) = HCF(341,308) = HCF(649,341) = HCF(990,649) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 169 > 11, we apply the division lemma to 169 and 11, to get
169 = 11 x 15 + 4
Step 2: Since the reminder 11 ≠ 0, we apply division lemma to 4 and 11, to get
11 = 4 x 2 + 3
Step 3: We consider the new divisor 4 and the new remainder 3, and apply the division lemma to get
4 = 3 x 1 + 1
We consider the new divisor 3 and the new remainder 1, and apply the division lemma 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 11 and 169 is 1
Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(11,4) = HCF(169,11) .
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Frequently Asked Questions on HCF of 649, 990, 169 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, 990, 169?
Answer: HCF of 649, 990, 169 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 649, 990, 169 using Euclid's Algorithm?
Answer: For arbitrary numbers 649, 990, 169 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.
