GCD of 691, 747, 77, 638 Calculator

Given Input numbers are 691, 747, 77, 638

In the factoring method, we have to find the divisors of all numbers

Divisors of 691 :

The positive integer divisors of 691 that completely divides 691 are.

1, 691

Divisors of 747 :

The positive integer divisors of 747 that completely divides 747 are.

1, 3, 9, 83, 249, 747

Divisors of 77 :

The positive integer divisors of 77 that completely divides 77 are.

1, 7, 11, 77

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

GCD of numbers is the greatest common divisor

So, the GCD (691, 747, 77, 638) = 1.

Given numbers are 691, 747, 77, 638

The list of prime factors of all numbers are

Prime factors of 691 are 691

Prime factors of 747 are 3 x 3 x 83

Prime factors of 77 are 7 x 11

Prime factors of 638 are 2 x 11 x 29

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 691, 747, 77, 638

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(691, 747) = 516177

GCD(691, 747) = ( 691 x 747 ) / 516177

= 691 / 747

= 691

Step2:

LCM(1, 77) = 77

GCD(1, 77) = ( 1 x 77 ) / 77

= 1 / 77

= 1

Step3:

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

= 1 / 638

= 1

So, Greatest Common Divisor of 691, 747, 77, 638 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 147, 958, 31, 979
• GCD of 140, 559, 23, 872
• GCD of 216, 414, 28, 565
• GCD of 915, 970, 23, 247
• GCD of 895, 559, 91, 223

Given numbers are 691, 747, 77, 638
The greatest common divisor of numbers 691, 747, 77, 638 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 691, 747, 77, 638 is 1.

1. What is the GCD of 691, 747, 77, 638?

GCD of given numbers 691, 747, 77, 638 is 1

2. How to calculate the greatest common divisor of 691, 747, 77, 638?

We can find the highest common divisor of 691, 747, 77, 638 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 691, 747, 77, 638 i.e 1.

3. How can I use the GCD of 691, 747, 77, 638Calculator?

Out the numbers 691, 747, 77, 638 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.