GCD of 638, 953, 420, 400 Calculator

Given Input numbers are 638, 953, 420, 400

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

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 953 :

The positive integer divisors of 953 that completely divides 953 are.

1, 953

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 400 :

The positive integer divisors of 400 that completely divides 400 are.

1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400

GCD of numbers is the greatest common divisor

So, the GCD (638, 953, 420, 400) = 1.

Given numbers are 638, 953, 420, 400

The list of prime factors of all numbers are

Prime factors of 638 are 2 x 11 x 29

Prime factors of 953 are 953

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

Prime factors of 400 are 2 x 2 x 2 x 2 x 5 x 5

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

Given numbers are 638, 953, 420, 400

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

Apply this formula for all numbers.

Step1:

LCM(638, 953) = 608014

GCD(638, 953) = ( 638 x 953 ) / 608014

= 638 / 953

= 638

Step2:

LCM(1, 420) = 420

GCD(1, 420) = ( 1 x 420 ) / 420

= 1 / 420

= 1

Step3:

LCM(1, 400) = 400

GCD(1, 400) = ( 1 x 400 ) / 400

= 1 / 400

= 1

So, Greatest Common Divisor of 638, 953, 420, 400 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 458, 724, 523, 250
• GCD of 821, 239, 973, 116
• GCD of 252, 145, 469, 763
• GCD of 400, 154, 339, 783
• GCD of 990, 486, 914, 238

Given numbers are 638, 953, 420, 400
The greatest common divisor of numbers 638, 953, 420, 400 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 638, 953, 420, 400 is 1.

1. What is the GCD of 638, 953, 420, 400?

GCD of given numbers 638, 953, 420, 400 is 1

2. How to calculate the greatest common divisor of 638, 953, 420, 400?

We can find the highest common divisor of 638, 953, 420, 400 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 638, 953, 420, 400 i.e 1.

3. How can I use the GCD of 638, 953, 420, 400Calculator?

Out the numbers 638, 953, 420, 400 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.