GCD of 827, 129, 21 Calculator

Given Input numbers are 827, 129, 21

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

Divisors of 827 :

The positive integer divisors of 827 that completely divides 827 are.

1, 827

Divisors of 129 :

The positive integer divisors of 129 that completely divides 129 are.

1, 3, 43, 129

Divisors of 21 :

The positive integer divisors of 21 that completely divides 21 are.

1, 3, 7, 21

GCD of numbers is the greatest common divisor

So, the GCD (827, 129, 21) = 1.

Given numbers are 827, 129, 21

The list of prime factors of all numbers are

Prime factors of 827 are 827

Prime factors of 129 are 3 x 43

Prime factors of 21 are 3 x 7

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

Given numbers are 827, 129, 21

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

Apply this formula for all numbers.

Step1:

LCM(827, 129) = 106683

GCD(827, 129) = ( 827 x 129 ) / 106683

= 827 / 129

= 827

Step2:

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

= 1 / 21

= 1

So, Greatest Common Divisor of 827, 129, 21 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 405, 741, 32
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• GCD of 820, 261, 62
• GCD of 748, 449, 88

Given numbers are 827, 129, 21
The greatest common divisor of numbers 827, 129, 21 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 827, 129, 21 is 1.

1. What is the GCD of 827, 129, 21?

GCD of given numbers 827, 129, 21 is 1

2. How to calculate the greatest common divisor of 827, 129, 21?

We can find the highest common divisor of 827, 129, 21 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 827, 129, 21 i.e 1.

3. How can I use the GCD of 827, 129, 21Calculator?

Out the numbers 827, 129, 21 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.