GCD of 188, 668, 781, 420 Calculator

Given Input numbers are 188, 668, 781, 420

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

Divisors of 188 :

The positive integer divisors of 188 that completely divides 188 are.

1, 2, 4, 47, 94, 188

Divisors of 668 :

The positive integer divisors of 668 that completely divides 668 are.

1, 2, 4, 167, 334, 668

Divisors of 781 :

The positive integer divisors of 781 that completely divides 781 are.

1, 11, 71, 781

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

GCD of numbers is the greatest common divisor

So, the GCD (188, 668, 781, 420) = 1.

Given numbers are 188, 668, 781, 420

The list of prime factors of all numbers are

Prime factors of 188 are 2 x 2 x 47

Prime factors of 668 are 2 x 2 x 167

Prime factors of 781 are 11 x 71

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

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

Given numbers are 188, 668, 781, 420

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

Apply this formula for all numbers.

Step1:

LCM(188, 668) = 31396

GCD(188, 668) = ( 188 x 668 ) / 31396

= 188 / 668

= 188

Step2:

LCM(4, 781) = 3124

GCD(4, 781) = ( 4 x 781 ) / 3124

= 4 / 781

= 4

Step3:

LCM(1, 420) = 420

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

= 1 / 420

= 1

So, Greatest Common Divisor of 188, 668, 781, 420 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 118, 441, 912, 599
• GCD of 736, 752, 507, 846
• GCD of 279, 507, 721, 871
• GCD of 701, 354, 165, 295
• GCD of 937, 614, 751, 651

Given numbers are 188, 668, 781, 420
The greatest common divisor of numbers 188, 668, 781, 420 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 188, 668, 781, 420 is 1.

1. What is the GCD of 188, 668, 781, 420?

GCD of given numbers 188, 668, 781, 420 is 1

2. How to calculate the greatest common divisor of 188, 668, 781, 420?

We can find the highest common divisor of 188, 668, 781, 420 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 188, 668, 781, 420 i.e 1.

3. How can I use the GCD of 188, 668, 781, 420Calculator?

Out the numbers 188, 668, 781, 420 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.