GCD of 561, 857, 877, 421 Calculator

Given Input numbers are 561, 857, 877, 421

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

Divisors of 561 :

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

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

Divisors of 857 :

The positive integer divisors of 857 that completely divides 857 are.

1, 857

Divisors of 877 :

The positive integer divisors of 877 that completely divides 877 are.

1, 877

Divisors of 421 :

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

1, 421

GCD of numbers is the greatest common divisor

So, the GCD (561, 857, 877, 421) = 1.

Given numbers are 561, 857, 877, 421

The list of prime factors of all numbers are

Prime factors of 561 are 3 x 11 x 17

Prime factors of 857 are 857

Prime factors of 877 are 877

Prime factors of 421 are 421

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

Given numbers are 561, 857, 877, 421

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

Apply this formula for all numbers.

Step1:

LCM(561, 857) = 480777

GCD(561, 857) = ( 561 x 857 ) / 480777

= 561 / 857

= 561

Step2:

LCM(1, 877) = 877

GCD(1, 877) = ( 1 x 877 ) / 877

= 1 / 877

= 1

Step3:

LCM(1, 421) = 421

GCD(1, 421) = ( 1 x 421 ) / 421

= 1 / 421

= 1

So, Greatest Common Divisor of 561, 857, 877, 421 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 959, 111, 104, 294
• GCD of 681, 881, 132, 526
• GCD of 361, 230, 435, 482
• GCD of 326, 423, 119, 994
• GCD of 356, 799, 634, 697

Given numbers are 561, 857, 877, 421
The greatest common divisor of numbers 561, 857, 877, 421 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 561, 857, 877, 421 is 1.

1. What is the GCD of 561, 857, 877, 421?

GCD of given numbers 561, 857, 877, 421 is 1

2. How to calculate the greatest common divisor of 561, 857, 877, 421?

We can find the highest common divisor of 561, 857, 877, 421 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 561, 857, 877, 421 i.e 1.

3. How can I use the GCD of 561, 857, 877, 421Calculator?

Out the numbers 561, 857, 877, 421 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.