GCD of 647, 396, 429, 840 Calculator

Given Input numbers are 647, 396, 429, 840

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

Divisors of 647 :

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

1, 647

Divisors of 396 :

The positive integer divisors of 396 that completely divides 396 are.

1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396

Divisors of 429 :

The positive integer divisors of 429 that completely divides 429 are.

1, 3, 11, 13, 33, 39, 143, 429

Divisors of 840 :

The positive integer divisors of 840 that completely divides 840 are.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

GCD of numbers is the greatest common divisor

So, the GCD (647, 396, 429, 840) = 1.

Given numbers are 647, 396, 429, 840

The list of prime factors of all numbers are

Prime factors of 647 are 647

Prime factors of 396 are 2 x 2 x 3 x 3 x 11

Prime factors of 429 are 3 x 11 x 13

Prime factors of 840 are 2 x 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 647, 396, 429, 840

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

Apply this formula for all numbers.

Step1:

LCM(647, 396) = 256212

GCD(647, 396) = ( 647 x 396 ) / 256212

= 647 / 396

= 647

Step2:

LCM(1, 429) = 429

GCD(1, 429) = ( 1 x 429 ) / 429

= 1 / 429

= 1

Step3:

LCM(1, 840) = 840

GCD(1, 840) = ( 1 x 840 ) / 840

= 1 / 840

= 1

So, Greatest Common Divisor of 647, 396, 429, 840 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 987, 844, 385, 704
• GCD of 778, 380, 904, 904
• GCD of 926, 594, 659, 675
• GCD of 968, 986, 500, 672
• GCD of 937, 391, 650, 230

Given numbers are 647, 396, 429, 840
The greatest common divisor of numbers 647, 396, 429, 840 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 647, 396, 429, 840 is 1.

1. What is the GCD of 647, 396, 429, 840?

GCD of given numbers 647, 396, 429, 840 is 1

2. How to calculate the greatest common divisor of 647, 396, 429, 840?

We can find the highest common divisor of 647, 396, 429, 840 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 647, 396, 429, 840 i.e 1.

3. How can I use the GCD of 647, 396, 429, 840Calculator?

Out the numbers 647, 396, 429, 840 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.