GCD of 654, 661, 424, 391 Calculator

Given Input numbers are 654, 661, 424, 391

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

Divisors of 654 :

The positive integer divisors of 654 that completely divides 654 are.

1, 2, 3, 6, 109, 218, 327, 654

Divisors of 661 :

The positive integer divisors of 661 that completely divides 661 are.

1, 661

Divisors of 424 :

The positive integer divisors of 424 that completely divides 424 are.

1, 2, 4, 8, 53, 106, 212, 424

Divisors of 391 :

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

1, 17, 23, 391

GCD of numbers is the greatest common divisor

So, the GCD (654, 661, 424, 391) = 1.

Given numbers are 654, 661, 424, 391

The list of prime factors of all numbers are

Prime factors of 654 are 2 x 3 x 109

Prime factors of 661 are 661

Prime factors of 424 are 2 x 2 x 2 x 53

Prime factors of 391 are 17 x 23

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

Given numbers are 654, 661, 424, 391

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

Apply this formula for all numbers.

Step1:

LCM(654, 661) = 432294

GCD(654, 661) = ( 654 x 661 ) / 432294

= 654 / 661

= 654

Step2:

LCM(1, 424) = 424

GCD(1, 424) = ( 1 x 424 ) / 424

= 1 / 424

= 1

Step3:

LCM(1, 391) = 391

GCD(1, 391) = ( 1 x 391 ) / 391

= 1 / 391

= 1

So, Greatest Common Divisor of 654, 661, 424, 391 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 999, 401, 763, 513
• GCD of 268, 738, 249, 968
• GCD of 789, 429, 362, 820
• GCD of 172, 648, 412, 346
• GCD of 454, 540, 117, 275

Given numbers are 654, 661, 424, 391
The greatest common divisor of numbers 654, 661, 424, 391 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 654, 661, 424, 391 is 1.

1. What is the GCD of 654, 661, 424, 391?

GCD of given numbers 654, 661, 424, 391 is 1

2. How to calculate the greatest common divisor of 654, 661, 424, 391?

We can find the highest common divisor of 654, 661, 424, 391 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 654, 661, 424, 391 i.e 1.

3. How can I use the GCD of 654, 661, 424, 391Calculator?

Out the numbers 654, 661, 424, 391 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.