GCD of 420, 771, 387, 956 Calculator

Given Input numbers are 420, 771, 387, 956

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

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 771 :

The positive integer divisors of 771 that completely divides 771 are.

1, 3, 257, 771

Divisors of 387 :

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

1, 3, 9, 43, 129, 387

Divisors of 956 :

The positive integer divisors of 956 that completely divides 956 are.

1, 2, 4, 239, 478, 956

GCD of numbers is the greatest common divisor

So, the GCD (420, 771, 387, 956) = 1.

Given numbers are 420, 771, 387, 956

The list of prime factors of all numbers are

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

Prime factors of 771 are 3 x 257

Prime factors of 387 are 3 x 3 x 43

Prime factors of 956 are 2 x 2 x 239

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

Given numbers are 420, 771, 387, 956

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

Apply this formula for all numbers.

Step1:

LCM(420, 771) = 107940

GCD(420, 771) = ( 420 x 771 ) / 107940

= 420 / 771

= 420

Step2:

LCM(3, 387) = 387

GCD(3, 387) = ( 3 x 387 ) / 387

= 3 / 387

= 3

Step3:

LCM(3, 956) = 2868

GCD(3, 956) = ( 3 x 956 ) / 2868

= 3 / 956

= 3

So, Greatest Common Divisor of 420, 771, 387, 956 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 850, 363, 618, 848
• GCD of 785, 731, 216, 613
• GCD of 491, 300, 753, 837
• GCD of 715, 513, 656, 264
• GCD of 525, 570, 689, 710

Given numbers are 420, 771, 387, 956
The greatest common divisor of numbers 420, 771, 387, 956 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 420, 771, 387, 956 is 1.

1. What is the GCD of 420, 771, 387, 956?

GCD of given numbers 420, 771, 387, 956 is 1

2. How to calculate the greatest common divisor of 420, 771, 387, 956?

We can find the highest common divisor of 420, 771, 387, 956 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 420, 771, 387, 956 i.e 1.

3. How can I use the GCD of 420, 771, 387, 956Calculator?

Out the numbers 420, 771, 387, 956 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.