Highest Common Factor of 687, 19215 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 687, 19215 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 687, 19215 is 3 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 687, 19215 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 687, 19215 is 3.
HCF(687, 19215) = 3
HCF of 687, 19215 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 687, 19215 is 3.
Highest Common Factor of 687,19215 is 3
Step 1: Since 19215 > 687, we apply the division lemma to 19215 and 687, to get
19215 = 687 x 27 + 666
Step 2: Since the reminder 687 ≠ 0, we apply division lemma to 666 and 687, to get
687 = 666 x 1 + 21
Step 3: We consider the new divisor 666 and the new remainder 21, and apply the division lemma to get
666 = 21 x 31 + 15
We consider the new divisor 21 and the new remainder 15,and apply the division lemma to get
21 = 15 x 1 + 6
We consider the new divisor 15 and the new remainder 6,and apply the division lemma to get
15 = 6 x 2 + 3
We consider the new divisor 6 and the new remainder 3,and apply the division lemma to get
6 = 3 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 687 and 19215 is 3
Notice that 3 = HCF(6,3) = HCF(15,6) = HCF(21,15) = HCF(666,21) = HCF(687,666) = HCF(19215,687) .
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Frequently Asked Questions on HCF of 687, 19215 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 687, 19215?
Answer: HCF of 687, 19215 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 687, 19215 using Euclid's Algorithm?
Answer: For arbitrary numbers 687, 19215 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.