Highest Common Factor of 778, 645 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 778, 645 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 778, 645 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 778, 645 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 778, 645 is 1.
HCF(778, 645) = 1
HCF of 778, 645 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 778, 645 is 1.
Highest Common Factor of 778,645 is 1
Step 1: Since 778 > 645, we apply the division lemma to 778 and 645, to get
778 = 645 x 1 + 133
Step 2: Since the reminder 645 ≠ 0, we apply division lemma to 133 and 645, to get
645 = 133 x 4 + 113
Step 3: We consider the new divisor 133 and the new remainder 113, and apply the division lemma to get
133 = 113 x 1 + 20
We consider the new divisor 113 and the new remainder 20,and apply the division lemma to get
113 = 20 x 5 + 13
We consider the new divisor 20 and the new remainder 13,and apply the division lemma to get
20 = 13 x 1 + 7
We consider the new divisor 13 and the new remainder 7,and apply the division lemma to get
13 = 7 x 1 + 6
We consider the new divisor 7 and the new remainder 6,and apply the division lemma to get
7 = 6 x 1 + 1
We consider the new divisor 6 and the new remainder 1,and apply the division lemma to get
6 = 1 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 778 and 645 is 1
Notice that 1 = HCF(6,1) = HCF(7,6) = HCF(13,7) = HCF(20,13) = HCF(113,20) = HCF(133,113) = HCF(645,133) = HCF(778,645) .
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Frequently Asked Questions on HCF of 778, 645 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 778, 645?
Answer: HCF of 778, 645 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 778, 645 using Euclid's Algorithm?
Answer: For arbitrary numbers 778, 645 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.