Highest Common Factor of 123, 309 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 123, 309 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 123, 309 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 123, 309 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 123, 309 is 3.
HCF(123, 309) = 3
HCF of 123, 309 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 123, 309 is 3.
Highest Common Factor of 123,309 is 3
Step 1: Since 309 > 123, we apply the division lemma to 309 and 123, to get
309 = 123 x 2 + 63
Step 2: Since the reminder 123 ≠ 0, we apply division lemma to 63 and 123, to get
123 = 63 x 1 + 60
Step 3: We consider the new divisor 63 and the new remainder 60, and apply the division lemma to get
63 = 60 x 1 + 3
We consider the new divisor 60 and the new remainder 3, and apply the division lemma to get
60 = 3 x 20 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 123 and 309 is 3
Notice that 3 = HCF(60,3) = HCF(63,60) = HCF(123,63) = HCF(309,123) .
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Frequently Asked Questions on HCF of 123, 309 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 123, 309?
Answer: HCF of 123, 309 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 123, 309 using Euclid's Algorithm?
Answer: For arbitrary numbers 123, 309 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.