GCD of 689, 771, 642, 988 Calculator

Given Input numbers are 689, 771, 642, 988

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

Divisors of 689 :

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

1, 13, 53, 689

Divisors of 771 :

The positive integer divisors of 771 that completely divides 771 are.

1, 3, 257, 771

Divisors of 642 :

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

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

Divisors of 988 :

The positive integer divisors of 988 that completely divides 988 are.

1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988

GCD of numbers is the greatest common divisor

So, the GCD (689, 771, 642, 988) = 1.

Given numbers are 689, 771, 642, 988

The list of prime factors of all numbers are

Prime factors of 689 are 13 x 53

Prime factors of 771 are 3 x 257

Prime factors of 642 are 2 x 3 x 107

Prime factors of 988 are 2 x 2 x 13 x 19

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

Given numbers are 689, 771, 642, 988

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

Apply this formula for all numbers.

Step1:

LCM(689, 771) = 531219

GCD(689, 771) = ( 689 x 771 ) / 531219

= 689 / 771

= 689

Step2:

LCM(1, 642) = 642

GCD(1, 642) = ( 1 x 642 ) / 642

= 1 / 642

= 1

Step3:

LCM(1, 988) = 988

GCD(1, 988) = ( 1 x 988 ) / 988

= 1 / 988

= 1

So, Greatest Common Divisor of 689, 771, 642, 988 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 486, 749, 485, 460
• GCD of 488, 156, 473, 876
• GCD of 770, 335, 515, 830
• GCD of 367, 254, 412, 656
• GCD of 788, 357, 186, 105

Given numbers are 689, 771, 642, 988
The greatest common divisor of numbers 689, 771, 642, 988 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 689, 771, 642, 988 is 1.

1. What is the GCD of 689, 771, 642, 988?

GCD of given numbers 689, 771, 642, 988 is 1

2. How to calculate the greatest common divisor of 689, 771, 642, 988?

We can find the highest common divisor of 689, 771, 642, 988 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 689, 771, 642, 988 i.e 1.

3. How can I use the GCD of 689, 771, 642, 988Calculator?

Out the numbers 689, 771, 642, 988 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.