GCD of 691, 398, 660, 618 Calculator

Given Input numbers are 691, 398, 660, 618

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

Divisors of 691 :

The positive integer divisors of 691 that completely divides 691 are.

1, 691

Divisors of 398 :

The positive integer divisors of 398 that completely divides 398 are.

1, 2, 199, 398

Divisors of 660 :

The positive integer divisors of 660 that completely divides 660 are.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660

Divisors of 618 :

The positive integer divisors of 618 that completely divides 618 are.

1, 2, 3, 6, 103, 206, 309, 618

GCD of numbers is the greatest common divisor

So, the GCD (691, 398, 660, 618) = 1.

Given numbers are 691, 398, 660, 618

The list of prime factors of all numbers are

Prime factors of 691 are 691

Prime factors of 398 are 2 x 199

Prime factors of 660 are 2 x 2 x 3 x 5 x 11

Prime factors of 618 are 2 x 3 x 103

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

Given numbers are 691, 398, 660, 618

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

Apply this formula for all numbers.

Step1:

LCM(691, 398) = 275018

GCD(691, 398) = ( 691 x 398 ) / 275018

= 691 / 398

= 691

Step2:

LCM(1, 660) = 660

GCD(1, 660) = ( 1 x 660 ) / 660

= 1 / 660

= 1

Step3:

LCM(1, 618) = 618

GCD(1, 618) = ( 1 x 618 ) / 618

= 1 / 618

= 1

So, Greatest Common Divisor of 691, 398, 660, 618 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 842, 708, 122, 786
• GCD of 900, 976, 887, 126
• GCD of 843, 228, 412, 949
• GCD of 351, 783, 879, 812
• GCD of 199, 345, 893, 328

Given numbers are 691, 398, 660, 618
The greatest common divisor of numbers 691, 398, 660, 618 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 691, 398, 660, 618 is 1.

1. What is the GCD of 691, 398, 660, 618?

GCD of given numbers 691, 398, 660, 618 is 1

2. How to calculate the greatest common divisor of 691, 398, 660, 618?

We can find the highest common divisor of 691, 398, 660, 618 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 691, 398, 660, 618 i.e 1.

3. How can I use the GCD of 691, 398, 660, 618Calculator?

Out the numbers 691, 398, 660, 618 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.