Highest Common Factor of 639, 904, 911, 691 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, 904, 911, 691 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 639, 904, 911, 691 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, 904, 911, 691 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, 904, 911, 691 is 1.

HCF(639, 904, 911, 691) = 1

HCF of 639, 904, 911, 691 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, 904, 911, 691 is 1.

Highest Common Factor of 639,904,911,691 using Euclid's algorithm

Highest Common Factor of 639,904,911,691 is 1

Step 1: Since 904 > 639, we apply the division lemma to 904 and 639, to get

904 = 639 x 1 + 265

Step 2: Since the reminder 639 ≠ 0, we apply division lemma to 265 and 639, to get

639 = 265 x 2 + 109

Step 3: We consider the new divisor 265 and the new remainder 109, and apply the division lemma to get

265 = 109 x 2 + 47

We consider the new divisor 109 and the new remainder 47,and apply the division lemma to get

109 = 47 x 2 + 15

We consider the new divisor 47 and the new remainder 15,and apply the division lemma to get

47 = 15 x 3 + 2

We consider the new divisor 15 and the new remainder 2,and apply the division lemma to get

15 = 2 x 7 + 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 904 is 1

Notice that 1 = HCF(2,1) = HCF(15,2) = HCF(47,15) = HCF(109,47) = HCF(265,109) = HCF(639,265) = HCF(904,639) .

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

Step 1: Since 911 > 1, we apply the division lemma to 911 and 1, to get

911 = 1 x 911 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 911 is 1

Notice that 1 = HCF(911,1) .

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

Step 1: Since 691 > 1, we apply the division lemma to 691 and 1, to get

691 = 1 x 691 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 691 is 1

Notice that 1 = HCF(691,1) .

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Frequently Asked Questions on HCF of 639, 904, 911, 691 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, 904, 911, 691?

Answer: HCF of 639, 904, 911, 691 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 639, 904, 911, 691 using Euclid's Algorithm?

Answer: For arbitrary numbers 639, 904, 911, 691 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.