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GCD of 821, 634, 770, 666 Calculator

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


Online GCD Calculator is useful to find the GCD of 821, 634, 770, 666 quickly. Get the easiest ways to solve the greatest common divisor of 821, 634, 770, 666 i.e 1 in different methods as follows.

GCD of

How to Find GCD of Numbers 821, 634, 770, 666 with Factoring?

Given Input numbers are 821, 634, 770, 666

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

Divisors of 821 :

The positive integer divisors of 821 that completely divides 821 are.

1, 821

Divisors of 634 :

The positive integer divisors of 634 that completely divides 634 are.

1, 2, 317, 634

Divisors of 770 :

The positive integer divisors of 770 that completely divides 770 are.

1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770

Divisors of 666 :

The positive integer divisors of 666 that completely divides 666 are.

1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666


GCD of numbers is the greatest common divisor

So, the GCD (821, 634, 770, 666) = 1.

Find GCD of 821, 634, 770, 666 using Prime Factorization

Given numbers are 821, 634, 770, 666

The list of prime factors of all numbers are

Prime factors of 821 are 821

Prime factors of 634 are 2 x 317

Prime factors of 770 are 2 x 5 x 7 x 11

Prime factors of 666 are 2 x 3 x 3 x 37

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

Steps to Calculate GCD of 821, 634, 770, 666 using LCM Formula

Given numbers are 821, 634, 770, 666

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

Apply this formula for all numbers.

Step1:

LCM(821, 634) = 520514

GCD(821, 634) = ( 821 x 634 ) / 520514

= 821 / 634

= 821


Step2:

LCM(1, 770) = 770

GCD(1, 770) = ( 1 x 770 ) / 770

= 1 / 770

= 1


Step3:

LCM(1, 666) = 666

GCD(1, 666) = ( 1 x 666 ) / 666

= 1 / 666

= 1


So, Greatest Common Divisor of 821, 634, 770, 666 is 1

GCD of Numbers Calculation Examples

Greatest Common Divisor of 821, 634, 770, 666

Given numbers are 821, 634, 770, 666
The greatest common divisor of numbers 821, 634, 770, 666 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 821, 634, 770, 666 is 1.

FAQs on GCD of 821, 634, 770, 666 Calculator

1. What is the GCD of 821, 634, 770, 666?

GCD of given numbers 821, 634, 770, 666 is 1


2. How to calculate the greatest common divisor of 821, 634, 770, 666?

We can find the highest common divisor of 821, 634, 770, 666 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 821, 634, 770, 666 i.e 1.


3. How can I use the GCD of 821, 634, 770, 666Calculator?

Out the numbers 821, 634, 770, 666 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.