Highest Common Factor of 991, 557, 249 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 991, 557, 249 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 991, 557, 249 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 991, 557, 249 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 991, 557, 249 is 1.
HCF(991, 557, 249) = 1
HCF of 991, 557, 249 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 991, 557, 249 is 1.
Highest Common Factor of 991,557,249 is 1
Step 1: Since 991 > 557, we apply the division lemma to 991 and 557, to get
991 = 557 x 1 + 434
Step 2: Since the reminder 557 ≠ 0, we apply division lemma to 434 and 557, to get
557 = 434 x 1 + 123
Step 3: We consider the new divisor 434 and the new remainder 123, and apply the division lemma to get
434 = 123 x 3 + 65
We consider the new divisor 123 and the new remainder 65,and apply the division lemma to get
123 = 65 x 1 + 58
We consider the new divisor 65 and the new remainder 58,and apply the division lemma to get
65 = 58 x 1 + 7
We consider the new divisor 58 and the new remainder 7,and apply the division lemma to get
58 = 7 x 8 + 2
We consider the new divisor 7 and the new remainder 2,and apply the division lemma to get
7 = 2 x 3 + 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 991 and 557 is 1
Notice that 1 = HCF(2,1) = HCF(7,2) = HCF(58,7) = HCF(65,58) = HCF(123,65) = HCF(434,123) = HCF(557,434) = HCF(991,557) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 249 > 1, we apply the division lemma to 249 and 1, to get
249 = 1 x 249 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 249 is 1
Notice that 1 = HCF(249,1) .
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Frequently Asked Questions on HCF of 991, 557, 249 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 991, 557, 249?
Answer: HCF of 991, 557, 249 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 991, 557, 249 using Euclid's Algorithm?
Answer: For arbitrary numbers 991, 557, 249 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.