Highest Common Factor of 639, 977, 505 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 639, 977, 505 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 639, 977, 505 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 639, 977, 505 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 639, 977, 505 is 1.

HCF(639, 977, 505) = 1

HCF of 639, 977, 505 using Euclid's algorithm

Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.

HCF of:

Highest common factor (HCF) of 639, 977, 505 is 1.

Highest Common Factor of 639,977,505 using Euclid's algorithm

Highest Common Factor of 639,977,505 is 1

Step 1: Since 977 > 639, we apply the division lemma to 977 and 639, to get

977 = 639 x 1 + 338

Step 2: Since the reminder 639 ≠ 0, we apply division lemma to 338 and 639, to get

639 = 338 x 1 + 301

Step 3: We consider the new divisor 338 and the new remainder 301, and apply the division lemma to get

338 = 301 x 1 + 37

We consider the new divisor 301 and the new remainder 37,and apply the division lemma to get

301 = 37 x 8 + 5

We consider the new divisor 37 and the new remainder 5,and apply the division lemma to get

37 = 5 x 7 + 2

We consider the new divisor 5 and the new remainder 2,and apply the division lemma to get

5 = 2 x 2 + 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 639 and 977 is 1

Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(37,5) = HCF(301,37) = HCF(338,301) = HCF(639,338) = HCF(977,639) .

We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma

Step 1: Since 505 > 1, we apply the division lemma to 505 and 1, to get

505 = 1 x 505 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 505 is 1

Notice that 1 = HCF(505,1) .

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Frequently Asked Questions on HCF of 639, 977, 505 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 639, 977, 505?

Answer: HCF of 639, 977, 505 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 639, 977, 505 using Euclid's Algorithm?

Answer: For arbitrary numbers 639, 977, 505 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.