GCD of 261, 391, 149, 780 Calculator

Given Input numbers are 261, 391, 149, 780

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

Divisors of 261 :

The positive integer divisors of 261 that completely divides 261 are.

1, 3, 9, 29, 87, 261

Divisors of 391 :

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

1, 17, 23, 391

Divisors of 149 :

The positive integer divisors of 149 that completely divides 149 are.

1, 149

Divisors of 780 :

The positive integer divisors of 780 that completely divides 780 are.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

GCD of numbers is the greatest common divisor

So, the GCD (261, 391, 149, 780) = 1.

Given numbers are 261, 391, 149, 780

The list of prime factors of all numbers are

Prime factors of 261 are 3 x 3 x 29

Prime factors of 391 are 17 x 23

Prime factors of 149 are 149

Prime factors of 780 are 2 x 2 x 3 x 5 x 13

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

Given numbers are 261, 391, 149, 780

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

Apply this formula for all numbers.

Step1:

LCM(261, 391) = 102051

GCD(261, 391) = ( 261 x 391 ) / 102051

= 261 / 391

= 261

Step2:

LCM(1, 149) = 149

GCD(1, 149) = ( 1 x 149 ) / 149

= 1 / 149

= 1

Step3:

LCM(1, 780) = 780

GCD(1, 780) = ( 1 x 780 ) / 780

= 1 / 780

= 1

So, Greatest Common Divisor of 261, 391, 149, 780 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 481, 105, 292, 207
• GCD of 275, 202, 415, 693
• GCD of 327, 955, 584, 694
• GCD of 317, 552, 349, 391
• GCD of 188, 987, 725, 767

Given numbers are 261, 391, 149, 780
The greatest common divisor of numbers 261, 391, 149, 780 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 261, 391, 149, 780 is 1.

1. What is the GCD of 261, 391, 149, 780?

GCD of given numbers 261, 391, 149, 780 is 1

2. How to calculate the greatest common divisor of 261, 391, 149, 780?

We can find the highest common divisor of 261, 391, 149, 780 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 261, 391, 149, 780 i.e 1.

3. How can I use the GCD of 261, 391, 149, 780Calculator?

Out the numbers 261, 391, 149, 780 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.