GCD of 661, 338, 558, 648 Calculator

Given Input numbers are 661, 338, 558, 648

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

Divisors of 661 :

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

1, 661

Divisors of 338 :

The positive integer divisors of 338 that completely divides 338 are.

1, 2, 13, 26, 169, 338

Divisors of 558 :

The positive integer divisors of 558 that completely divides 558 are.

1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558

Divisors of 648 :

The positive integer divisors of 648 that completely divides 648 are.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648

GCD of numbers is the greatest common divisor

So, the GCD (661, 338, 558, 648) = 1.

Given numbers are 661, 338, 558, 648

The list of prime factors of all numbers are

Prime factors of 661 are 661

Prime factors of 338 are 2 x 13 x 13

Prime factors of 558 are 2 x 3 x 3 x 31

Prime factors of 648 are 2 x 2 x 2 x 3 x 3 x 3 x 3

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

Given numbers are 661, 338, 558, 648

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

Apply this formula for all numbers.

Step1:

LCM(661, 338) = 223418

GCD(661, 338) = ( 661 x 338 ) / 223418

= 661 / 338

= 661

Step2:

LCM(1, 558) = 558

GCD(1, 558) = ( 1 x 558 ) / 558

= 1 / 558

= 1

Step3:

LCM(1, 648) = 648

GCD(1, 648) = ( 1 x 648 ) / 648

= 1 / 648

= 1

So, Greatest Common Divisor of 661, 338, 558, 648 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 506, 166, 301, 373
• GCD of 513, 927, 919, 513
• GCD of 963, 104, 202, 572
• GCD of 967, 991, 271, 163
• GCD of 215, 278, 980, 920

Given numbers are 661, 338, 558, 648
The greatest common divisor of numbers 661, 338, 558, 648 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 661, 338, 558, 648 is 1.

1. What is the GCD of 661, 338, 558, 648?

GCD of given numbers 661, 338, 558, 648 is 1

2. How to calculate the greatest common divisor of 661, 338, 558, 648?

We can find the highest common divisor of 661, 338, 558, 648 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 661, 338, 558, 648 i.e 1.

3. How can I use the GCD of 661, 338, 558, 648Calculator?

Out the numbers 661, 338, 558, 648 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.