GCD of 449, 391, 771, 138 Calculator

Given Input numbers are 449, 391, 771, 138

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

Divisors of 449 :

The positive integer divisors of 449 that completely divides 449 are.

1, 449

Divisors of 391 :

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

1, 17, 23, 391

Divisors of 771 :

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

1, 3, 257, 771

Divisors of 138 :

The positive integer divisors of 138 that completely divides 138 are.

1, 2, 3, 6, 23, 46, 69, 138

GCD of numbers is the greatest common divisor

So, the GCD (449, 391, 771, 138) = 1.

Given numbers are 449, 391, 771, 138

The list of prime factors of all numbers are

Prime factors of 449 are 449

Prime factors of 391 are 17 x 23

Prime factors of 771 are 3 x 257

Prime factors of 138 are 2 x 3 x 23

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

Given numbers are 449, 391, 771, 138

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

Apply this formula for all numbers.

Step1:

LCM(449, 391) = 175559

GCD(449, 391) = ( 449 x 391 ) / 175559

= 449 / 391

= 449

Step2:

LCM(1, 771) = 771

GCD(1, 771) = ( 1 x 771 ) / 771

= 1 / 771

= 1

Step3:

LCM(1, 138) = 138

GCD(1, 138) = ( 1 x 138 ) / 138

= 1 / 138

= 1

So, Greatest Common Divisor of 449, 391, 771, 138 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 407, 734, 167, 252
• GCD of 305, 213, 745, 762
• GCD of 552, 695, 345, 322
• GCD of 420, 558, 789, 585
• GCD of 618, 518, 448, 955

Given numbers are 449, 391, 771, 138
The greatest common divisor of numbers 449, 391, 771, 138 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 449, 391, 771, 138 is 1.

1. What is the GCD of 449, 391, 771, 138?

GCD of given numbers 449, 391, 771, 138 is 1

2. How to calculate the greatest common divisor of 449, 391, 771, 138?

We can find the highest common divisor of 449, 391, 771, 138 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 449, 391, 771, 138 i.e 1.

3. How can I use the GCD of 449, 391, 771, 138Calculator?

Out the numbers 449, 391, 771, 138 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.