GCD of 138, 575, 647, 421 Calculator

Given Input numbers are 138, 575, 647, 421

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

Divisors of 138 :

The positive integer divisors of 138 that completely divides 138 are.

1, 2, 3, 6, 23, 46, 69, 138

Divisors of 575 :

The positive integer divisors of 575 that completely divides 575 are.

1, 5, 23, 25, 115, 575

Divisors of 647 :

The positive integer divisors of 647 that completely divides 647 are.

1, 647

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 (138, 575, 647, 421) = 1.

Given numbers are 138, 575, 647, 421

The list of prime factors of all numbers are

Prime factors of 138 are 2 x 3 x 23

Prime factors of 575 are 5 x 5 x 23

Prime factors of 647 are 647

Prime factors of 421 are 421

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

Given numbers are 138, 575, 647, 421

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

Apply this formula for all numbers.

Step1:

LCM(138, 575) = 3450

GCD(138, 575) = ( 138 x 575 ) / 3450

= 138 / 575

= 138

Step2:

LCM(23, 647) = 14881

GCD(23, 647) = ( 23 x 647 ) / 14881

= 23 / 647

= 23

Step3:

LCM(1, 421) = 421

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

= 1 / 421

= 1

So, Greatest Common Divisor of 138, 575, 647, 421 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 236, 443, 332, 686
• GCD of 460, 797, 823, 801
• GCD of 361, 937, 559, 407
• GCD of 230, 536, 147, 742
• GCD of 182, 335, 924, 982

Given numbers are 138, 575, 647, 421
The greatest common divisor of numbers 138, 575, 647, 421 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 138, 575, 647, 421 is 1.

1. What is the GCD of 138, 575, 647, 421?

GCD of given numbers 138, 575, 647, 421 is 1

2. How to calculate the greatest common divisor of 138, 575, 647, 421?

We can find the highest common divisor of 138, 575, 647, 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 138, 575, 647, 421 i.e 1.

3. How can I use the GCD of 138, 575, 647, 421Calculator?

Out the numbers 138, 575, 647, 421 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.