GCD of 987, 812, 170, 721 Calculator

Given Input numbers are 987, 812, 170, 721

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

Divisors of 987 :

The positive integer divisors of 987 that completely divides 987 are.

1, 3, 7, 21, 47, 141, 329, 987

Divisors of 812 :

The positive integer divisors of 812 that completely divides 812 are.

1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812

Divisors of 170 :

The positive integer divisors of 170 that completely divides 170 are.

1, 2, 5, 10, 17, 34, 85, 170

Divisors of 721 :

The positive integer divisors of 721 that completely divides 721 are.

1, 7, 103, 721

GCD of numbers is the greatest common divisor

So, the GCD (987, 812, 170, 721) = 1.

Given numbers are 987, 812, 170, 721

The list of prime factors of all numbers are

Prime factors of 987 are 3 x 7 x 47

Prime factors of 812 are 2 x 2 x 7 x 29

Prime factors of 170 are 2 x 5 x 17

Prime factors of 721 are 7 x 103

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

Given numbers are 987, 812, 170, 721

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

Apply this formula for all numbers.

Step1:

LCM(987, 812) = 114492

GCD(987, 812) = ( 987 x 812 ) / 114492

= 987 / 812

= 987

Step2:

LCM(7, 170) = 1190

GCD(7, 170) = ( 7 x 170 ) / 1190

= 7 / 170

= 7

Step3:

LCM(1, 721) = 721

GCD(1, 721) = ( 1 x 721 ) / 721

= 1 / 721

= 1

So, Greatest Common Divisor of 987, 812, 170, 721 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 757, 457, 662, 610
• GCD of 616, 796, 787, 594
• GCD of 338, 863, 194, 935
• GCD of 771, 598, 683, 616
• GCD of 692, 900, 663, 823

Given numbers are 987, 812, 170, 721
The greatest common divisor of numbers 987, 812, 170, 721 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 987, 812, 170, 721 is 1.

1. What is the GCD of 987, 812, 170, 721?

GCD of given numbers 987, 812, 170, 721 is 1

2. How to calculate the greatest common divisor of 987, 812, 170, 721?

We can find the highest common divisor of 987, 812, 170, 721 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 987, 812, 170, 721 i.e 1.

3. How can I use the GCD of 987, 812, 170, 721Calculator?

Out the numbers 987, 812, 170, 721 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.