GCD of 491, 642, 763, 689 Calculator

Given Input numbers are 491, 642, 763, 689

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

Divisors of 491 :

The positive integer divisors of 491 that completely divides 491 are.

1, 491

Divisors of 642 :

The positive integer divisors of 642 that completely divides 642 are.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 763 :

The positive integer divisors of 763 that completely divides 763 are.

1, 7, 109, 763

Divisors of 689 :

The positive integer divisors of 689 that completely divides 689 are.

1, 13, 53, 689

GCD of numbers is the greatest common divisor

So, the GCD (491, 642, 763, 689) = 1.

Given numbers are 491, 642, 763, 689

The list of prime factors of all numbers are

Prime factors of 491 are 491

Prime factors of 642 are 2 x 3 x 107

Prime factors of 763 are 7 x 109

Prime factors of 689 are 13 x 53

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

Given numbers are 491, 642, 763, 689

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

Apply this formula for all numbers.

Step1:

LCM(491, 642) = 315222

GCD(491, 642) = ( 491 x 642 ) / 315222

= 491 / 642

= 491

Step2:

LCM(1, 763) = 763

GCD(1, 763) = ( 1 x 763 ) / 763

= 1 / 763

= 1

Step3:

LCM(1, 689) = 689

GCD(1, 689) = ( 1 x 689 ) / 689

= 1 / 689

= 1

So, Greatest Common Divisor of 491, 642, 763, 689 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 139, 602, 834, 863
• GCD of 399, 236, 235, 331
• GCD of 137, 964, 984, 991
• GCD of 757, 899, 613, 190
• GCD of 792, 962, 622, 847

Given numbers are 491, 642, 763, 689
The greatest common divisor of numbers 491, 642, 763, 689 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 491, 642, 763, 689 is 1.

1. What is the GCD of 491, 642, 763, 689?

GCD of given numbers 491, 642, 763, 689 is 1

2. How to calculate the greatest common divisor of 491, 642, 763, 689?

We can find the highest common divisor of 491, 642, 763, 689 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 491, 642, 763, 689 i.e 1.

3. How can I use the GCD of 491, 642, 763, 689Calculator?

Out the numbers 491, 642, 763, 689 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.