GCD of 821, 787, 15 Calculator

Given Input numbers are 821, 787, 15

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

Divisors of 821 :

The positive integer divisors of 821 that completely divides 821 are.

1, 821

Divisors of 787 :

The positive integer divisors of 787 that completely divides 787 are.

1, 787

Divisors of 15 :

The positive integer divisors of 15 that completely divides 15 are.

1, 3, 5, 15

GCD of numbers is the greatest common divisor

So, the GCD (821, 787, 15) = 1.

Given numbers are 821, 787, 15

The list of prime factors of all numbers are

Prime factors of 821 are 821

Prime factors of 787 are 787

Prime factors of 15 are 3 x 5

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

Given numbers are 821, 787, 15

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

Apply this formula for all numbers.

Step1:

LCM(821, 787) = 646127

GCD(821, 787) = ( 821 x 787 ) / 646127

= 821 / 787

= 821

Step2:

LCM(1, 15) = 15

GCD(1, 15) = ( 1 x 15 ) / 15

= 1 / 15

= 1

So, Greatest Common Divisor of 821, 787, 15 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 836, 161, 28
• GCD of 602, 322, 74
• GCD of 348, 488, 48
• GCD of 919, 494, 70
• GCD of 266, 971, 95

Given numbers are 821, 787, 15
The greatest common divisor of numbers 821, 787, 15 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 821, 787, 15 is 1.

1. What is the GCD of 821, 787, 15?

GCD of given numbers 821, 787, 15 is 1

2. How to calculate the greatest common divisor of 821, 787, 15?

We can find the highest common divisor of 821, 787, 15 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 821, 787, 15 i.e 1.

3. How can I use the GCD of 821, 787, 15Calculator?

Out the numbers 821, 787, 15 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.