GCD of 420, 161, 775, 861 Calculator

Given Input numbers are 420, 161, 775, 861

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

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

Divisors of 161 :

The positive integer divisors of 161 that completely divides 161 are.

1, 7, 23, 161

Divisors of 775 :

The positive integer divisors of 775 that completely divides 775 are.

1, 5, 25, 31, 155, 775

Divisors of 861 :

The positive integer divisors of 861 that completely divides 861 are.

1, 3, 7, 21, 41, 123, 287, 861

GCD of numbers is the greatest common divisor

So, the GCD (420, 161, 775, 861) = 1.

Given numbers are 420, 161, 775, 861

The list of prime factors of all numbers are

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

Prime factors of 161 are 7 x 23

Prime factors of 775 are 5 x 5 x 31

Prime factors of 861 are 3 x 7 x 41

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

Given numbers are 420, 161, 775, 861

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

Apply this formula for all numbers.

Step1:

LCM(420, 161) = 9660

GCD(420, 161) = ( 420 x 161 ) / 9660

= 420 / 161

= 420

Step2:

LCM(7, 775) = 5425

GCD(7, 775) = ( 7 x 775 ) / 5425

= 7 / 775

= 7

Step3:

LCM(1, 861) = 861

GCD(1, 861) = ( 1 x 861 ) / 861

= 1 / 861

= 1

So, Greatest Common Divisor of 420, 161, 775, 861 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 302, 768, 477, 818
• GCD of 926, 209, 641, 225
• GCD of 252, 790, 663, 998
• GCD of 567, 173, 216, 851
• GCD of 377, 681, 769, 784

Given numbers are 420, 161, 775, 861
The greatest common divisor of numbers 420, 161, 775, 861 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 420, 161, 775, 861 is 1.

1. What is the GCD of 420, 161, 775, 861?

GCD of given numbers 420, 161, 775, 861 is 1

2. How to calculate the greatest common divisor of 420, 161, 775, 861?

We can find the highest common divisor of 420, 161, 775, 861 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 420, 161, 775, 861 i.e 1.

3. How can I use the GCD of 420, 161, 775, 861Calculator?

Out the numbers 420, 161, 775, 861 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.