GCD of 309, 842, 421, 247 Calculator

Given Input numbers are 309, 842, 421, 247

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

Divisors of 309 :

The positive integer divisors of 309 that completely divides 309 are.

1, 3, 103, 309

Divisors of 842 :

The positive integer divisors of 842 that completely divides 842 are.

1, 2, 421, 842

Divisors of 421 :

The positive integer divisors of 421 that completely divides 421 are.

1, 421

Divisors of 247 :

The positive integer divisors of 247 that completely divides 247 are.

1, 13, 19, 247

GCD of numbers is the greatest common divisor

So, the GCD (309, 842, 421, 247) = 1.

Given numbers are 309, 842, 421, 247

The list of prime factors of all numbers are

Prime factors of 309 are 3 x 103

Prime factors of 842 are 2 x 421

Prime factors of 421 are 421

Prime factors of 247 are 13 x 19

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

Given numbers are 309, 842, 421, 247

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

Apply this formula for all numbers.

Step1:

LCM(309, 842) = 260178

GCD(309, 842) = ( 309 x 842 ) / 260178

= 309 / 842

= 309

Step2:

LCM(1, 421) = 421

GCD(1, 421) = ( 1 x 421 ) / 421

= 1 / 421

= 1

Step3:

LCM(1, 247) = 247

GCD(1, 247) = ( 1 x 247 ) / 247

= 1 / 247

= 1

So, Greatest Common Divisor of 309, 842, 421, 247 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 654, 929, 657, 254
• GCD of 168, 232, 223, 893
• GCD of 820, 354, 222, 739
• GCD of 525, 602, 384, 869
• GCD of 996, 738, 387, 914

Given numbers are 309, 842, 421, 247
The greatest common divisor of numbers 309, 842, 421, 247 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 309, 842, 421, 247 is 1.

1. What is the GCD of 309, 842, 421, 247?

GCD of given numbers 309, 842, 421, 247 is 1

2. How to calculate the greatest common divisor of 309, 842, 421, 247?

We can find the highest common divisor of 309, 842, 421, 247 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 309, 842, 421, 247 i.e 1.

3. How can I use the GCD of 309, 842, 421, 247Calculator?

Out the numbers 309, 842, 421, 247 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.