GCD of 391, 688, 90 Calculator

Given Input numbers are 391, 688, 90

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

Divisors of 391 :

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

1, 17, 23, 391

Divisors of 688 :

The positive integer divisors of 688 that completely divides 688 are.

1, 2, 4, 8, 16, 43, 86, 172, 344, 688

Divisors of 90 :

The positive integer divisors of 90 that completely divides 90 are.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

GCD of numbers is the greatest common divisor

So, the GCD (391, 688, 90) = 1.

Given numbers are 391, 688, 90

The list of prime factors of all numbers are

Prime factors of 391 are 17 x 23

Prime factors of 688 are 2 x 2 x 2 x 2 x 43

Prime factors of 90 are 2 x 3 x 3 x 5

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

Given numbers are 391, 688, 90

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

Apply this formula for all numbers.

Step1:

LCM(391, 688) = 269008

GCD(391, 688) = ( 391 x 688 ) / 269008

= 391 / 688

= 391

Step2:

LCM(1, 90) = 90

GCD(1, 90) = ( 1 x 90 ) / 90

= 1 / 90

= 1

So, Greatest Common Divisor of 391, 688, 90 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 999, 327, 84
• GCD of 957, 471, 89
• GCD of 959, 513, 94
• GCD of 442, 644, 53
• GCD of 609, 773, 52

Given numbers are 391, 688, 90
The greatest common divisor of numbers 391, 688, 90 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 391, 688, 90 is 1.

1. What is the GCD of 391, 688, 90?

GCD of given numbers 391, 688, 90 is 1

2. How to calculate the greatest common divisor of 391, 688, 90?

We can find the highest common divisor of 391, 688, 90 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 391, 688, 90 i.e 1.

3. How can I use the GCD of 391, 688, 90Calculator?

Out the numbers 391, 688, 90 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.