GCD of 687, 642, 890, 630 Calculator

Given Input numbers are 687, 642, 890, 630

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

Divisors of 687 :

The positive integer divisors of 687 that completely divides 687 are.

1, 3, 229, 687

Divisors of 642 :

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

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

Divisors of 890 :

The positive integer divisors of 890 that completely divides 890 are.

1, 2, 5, 10, 89, 178, 445, 890

Divisors of 630 :

The positive integer divisors of 630 that completely divides 630 are.

1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630

GCD of numbers is the greatest common divisor

So, the GCD (687, 642, 890, 630) = 1.

Given numbers are 687, 642, 890, 630

The list of prime factors of all numbers are

Prime factors of 687 are 3 x 229

Prime factors of 642 are 2 x 3 x 107

Prime factors of 890 are 2 x 5 x 89

Prime factors of 630 are 2 x 3 x 3 x 5 x 7

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

Given numbers are 687, 642, 890, 630

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

Apply this formula for all numbers.

Step1:

LCM(687, 642) = 147018

GCD(687, 642) = ( 687 x 642 ) / 147018

= 687 / 642

= 687

Step2:

LCM(3, 890) = 2670

GCD(3, 890) = ( 3 x 890 ) / 2670

= 3 / 890

= 3

Step3:

LCM(1, 630) = 630

GCD(1, 630) = ( 1 x 630 ) / 630

= 1 / 630

= 1

So, Greatest Common Divisor of 687, 642, 890, 630 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 344, 803, 986, 733
• GCD of 309, 701, 476, 375
• GCD of 559, 565, 290, 295
• GCD of 327, 824, 691, 935
• GCD of 721, 361, 151, 295

Given numbers are 687, 642, 890, 630
The greatest common divisor of numbers 687, 642, 890, 630 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 687, 642, 890, 630 is 1.

1. What is the GCD of 687, 642, 890, 630?

GCD of given numbers 687, 642, 890, 630 is 1

2. How to calculate the greatest common divisor of 687, 642, 890, 630?

We can find the highest common divisor of 687, 642, 890, 630 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 687, 642, 890, 630 i.e 1.

3. How can I use the GCD of 687, 642, 890, 630Calculator?

Out the numbers 687, 642, 890, 630 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.