GCD of 421, 168, 542, 561 Calculator

Given Input numbers are 421, 168, 542, 561

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

Divisors of 421 :

The positive integer divisors of 421 that completely divides 421 are.

1, 421

Divisors of 168 :

The positive integer divisors of 168 that completely divides 168 are.

1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168

Divisors of 542 :

The positive integer divisors of 542 that completely divides 542 are.

1, 2, 271, 542

Divisors of 561 :

The positive integer divisors of 561 that completely divides 561 are.

1, 3, 11, 17, 33, 51, 187, 561

GCD of numbers is the greatest common divisor

So, the GCD (421, 168, 542, 561) = 1.

Given numbers are 421, 168, 542, 561

The list of prime factors of all numbers are

Prime factors of 421 are 421

Prime factors of 168 are 2 x 2 x 2 x 3 x 7

Prime factors of 542 are 2 x 271

Prime factors of 561 are 3 x 11 x 17

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

Given numbers are 421, 168, 542, 561

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

Apply this formula for all numbers.

Step1:

LCM(421, 168) = 70728

GCD(421, 168) = ( 421 x 168 ) / 70728

= 421 / 168

= 421

Step2:

LCM(1, 542) = 542

GCD(1, 542) = ( 1 x 542 ) / 542

= 1 / 542

= 1

Step3:

LCM(1, 561) = 561

GCD(1, 561) = ( 1 x 561 ) / 561

= 1 / 561

= 1

So, Greatest Common Divisor of 421, 168, 542, 561 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 187, 858, 143, 616
• GCD of 216, 700, 817, 490
• GCD of 989, 496, 193, 814
• GCD of 280, 981, 910, 798
• GCD of 369, 787, 708, 712

Given numbers are 421, 168, 542, 561
The greatest common divisor of numbers 421, 168, 542, 561 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 421, 168, 542, 561 is 1.

1. What is the GCD of 421, 168, 542, 561?

GCD of given numbers 421, 168, 542, 561 is 1

2. How to calculate the greatest common divisor of 421, 168, 542, 561?

We can find the highest common divisor of 421, 168, 542, 561 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 421, 168, 542, 561 i.e 1.

3. How can I use the GCD of 421, 168, 542, 561Calculator?

Out the numbers 421, 168, 542, 561 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.