Highest Common Factor of 841, 490 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 841, 490 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 841, 490 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 841, 490 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 841, 490 is 1.
HCF(841, 490) = 1
HCF of 841, 490 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 841, 490 is 1.
Highest Common Factor of 841,490 is 1
Step 1: Since 841 > 490, we apply the division lemma to 841 and 490, to get
841 = 490 x 1 + 351
Step 2: Since the reminder 490 ≠ 0, we apply division lemma to 351 and 490, to get
490 = 351 x 1 + 139
Step 3: We consider the new divisor 351 and the new remainder 139, and apply the division lemma to get
351 = 139 x 2 + 73
We consider the new divisor 139 and the new remainder 73,and apply the division lemma to get
139 = 73 x 1 + 66
We consider the new divisor 73 and the new remainder 66,and apply the division lemma to get
73 = 66 x 1 + 7
We consider the new divisor 66 and the new remainder 7,and apply the division lemma to get
66 = 7 x 9 + 3
We consider the new divisor 7 and the new remainder 3,and apply the division lemma to get
7 = 3 x 2 + 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 841 and 490 is 1
Notice that 1 = HCF(3,1) = HCF(7,3) = HCF(66,7) = HCF(73,66) = HCF(139,73) = HCF(351,139) = HCF(490,351) = HCF(841,490) .
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Frequently Asked Questions on HCF of 841, 490 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 841, 490?
Answer: HCF of 841, 490 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 841, 490 using Euclid's Algorithm?
Answer: For arbitrary numbers 841, 490 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.