LCM of 3 Numbers Calculator LCM of 4 Numbers Calculator LCM of 5 Numbers Calculator LCD Calculator How to find LCM LCM and HCF Questions Least Common Denominator Calculator Greatest Common Divisor Calculator HCF Calculator HCF of 3 Numbers Calculator HCF of 4 Numbers Calculator GCD Calculator Greatest Common Factor Calculator Least Common Multiple Calculator Common Factors Calculator

GCD of 402, 644, 669, 891 Calculator

Created By : Veerendra
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023


Online GCD Calculator is useful to find the GCD of 402, 644, 669, 891 quickly. Get the easiest ways to solve the greatest common divisor of 402, 644, 669, 891 i.e 1 in different methods as follows.

GCD of

How to Find GCD of Numbers 402, 644, 669, 891 with Factoring?

Given Input numbers are 402, 644, 669, 891

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

Divisors of 402 :

The positive integer divisors of 402 that completely divides 402 are.

1, 2, 3, 6, 67, 134, 201, 402

Divisors of 644 :

The positive integer divisors of 644 that completely divides 644 are.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 669 :

The positive integer divisors of 669 that completely divides 669 are.

1, 3, 223, 669

Divisors of 891 :

The positive integer divisors of 891 that completely divides 891 are.

1, 3, 9, 11, 27, 33, 81, 99, 297, 891


GCD of numbers is the greatest common divisor

So, the GCD (402, 644, 669, 891) = 1.

Find GCD of 402, 644, 669, 891 using Prime Factorization

Given numbers are 402, 644, 669, 891

The list of prime factors of all numbers are

Prime factors of 402 are 2 x 3 x 67

Prime factors of 644 are 2 x 2 x 7 x 23

Prime factors of 669 are 3 x 223

Prime factors of 891 are 3 x 3 x 3 x 3 x 11

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

Steps to Calculate GCD of 402, 644, 669, 891 using LCM Formula

Given numbers are 402, 644, 669, 891

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

Apply this formula for all numbers.

Step1:

LCM(402, 644) = 129444

GCD(402, 644) = ( 402 x 644 ) / 129444

= 402 / 644

= 402


Step2:

LCM(2, 669) = 1338

GCD(2, 669) = ( 2 x 669 ) / 1338

= 2 / 669

= 2


Step3:

LCM(1, 891) = 891

GCD(1, 891) = ( 1 x 891 ) / 891

= 1 / 891

= 1


So, Greatest Common Divisor of 402, 644, 669, 891 is 1

GCD of Numbers Calculation Examples

Greatest Common Divisor of 402, 644, 669, 891

Given numbers are 402, 644, 669, 891
The greatest common divisor of numbers 402, 644, 669, 891 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 402, 644, 669, 891 is 1.

FAQs on GCD of 402, 644, 669, 891 Calculator

1. What is the GCD of 402, 644, 669, 891?

GCD of given numbers 402, 644, 669, 891 is 1


2. How to calculate the greatest common divisor of 402, 644, 669, 891?

We can find the highest common divisor of 402, 644, 669, 891 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 402, 644, 669, 891 i.e 1.


3. How can I use the GCD of 402, 644, 669, 891Calculator?

Out the numbers 402, 644, 669, 891 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.