GCD of 391, 213, 978, 387 Calculator

Given Input numbers are 391, 213, 978, 387

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

Divisors of 391 :

The positive integer divisors of 391 that completely divides 391 are.

1, 17, 23, 391

Divisors of 213 :

The positive integer divisors of 213 that completely divides 213 are.

1, 3, 71, 213

Divisors of 978 :

The positive integer divisors of 978 that completely divides 978 are.

1, 2, 3, 6, 163, 326, 489, 978

Divisors of 387 :

The positive integer divisors of 387 that completely divides 387 are.

1, 3, 9, 43, 129, 387

GCD of numbers is the greatest common divisor

So, the GCD (391, 213, 978, 387) = 1.

Given numbers are 391, 213, 978, 387

The list of prime factors of all numbers are

Prime factors of 391 are 17 x 23

Prime factors of 213 are 3 x 71

Prime factors of 978 are 2 x 3 x 163

Prime factors of 387 are 3 x 3 x 43

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

Given numbers are 391, 213, 978, 387

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

Apply this formula for all numbers.

Step1:

LCM(391, 213) = 83283

GCD(391, 213) = ( 391 x 213 ) / 83283

= 391 / 213

= 391

Step2:

LCM(1, 978) = 978

GCD(1, 978) = ( 1 x 978 ) / 978

= 1 / 978

= 1

Step3:

LCM(1, 387) = 387

GCD(1, 387) = ( 1 x 387 ) / 387

= 1 / 387

= 1

So, Greatest Common Divisor of 391, 213, 978, 387 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 995, 813, 145, 933
• GCD of 495, 327, 860, 384
• GCD of 529, 186, 823, 705
• GCD of 176, 763, 432, 602
• GCD of 171, 102, 435, 140

Given numbers are 391, 213, 978, 387
The greatest common divisor of numbers 391, 213, 978, 387 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 391, 213, 978, 387 is 1.

1. What is the GCD of 391, 213, 978, 387?

GCD of given numbers 391, 213, 978, 387 is 1

2. How to calculate the greatest common divisor of 391, 213, 978, 387?

We can find the highest common divisor of 391, 213, 978, 387 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 391, 213, 978, 387 i.e 1.

3. How can I use the GCD of 391, 213, 978, 387Calculator?

Out the numbers 391, 213, 978, 387 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.