GCD of 645, 876, 551, 820 Calculator

Given Input numbers are 645, 876, 551, 820

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

Divisors of 645 :

The positive integer divisors of 645 that completely divides 645 are.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 876 :

The positive integer divisors of 876 that completely divides 876 are.

1, 2, 3, 4, 6, 12, 73, 146, 219, 292, 438, 876

Divisors of 551 :

The positive integer divisors of 551 that completely divides 551 are.

1, 19, 29, 551

Divisors of 820 :

The positive integer divisors of 820 that completely divides 820 are.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

GCD of numbers is the greatest common divisor

So, the GCD (645, 876, 551, 820) = 1.

Given numbers are 645, 876, 551, 820

The list of prime factors of all numbers are

Prime factors of 645 are 3 x 5 x 43

Prime factors of 876 are 2 x 2 x 3 x 73

Prime factors of 551 are 19 x 29

Prime factors of 820 are 2 x 2 x 5 x 41

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

Given numbers are 645, 876, 551, 820

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

Apply this formula for all numbers.

Step1:

LCM(645, 876) = 188340

GCD(645, 876) = ( 645 x 876 ) / 188340

= 645 / 876

= 645

Step2:

LCM(3, 551) = 1653

GCD(3, 551) = ( 3 x 551 ) / 1653

= 3 / 551

= 3

Step3:

LCM(1, 820) = 820

GCD(1, 820) = ( 1 x 820 ) / 820

= 1 / 820

= 1

So, Greatest Common Divisor of 645, 876, 551, 820 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 240, 953, 971, 904
• GCD of 188, 580, 435, 447
• GCD of 512, 139, 431, 586
• GCD of 855, 429, 113, 429
• GCD of 311, 151, 977, 878

Given numbers are 645, 876, 551, 820
The greatest common divisor of numbers 645, 876, 551, 820 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 645, 876, 551, 820 is 1.

1. What is the GCD of 645, 876, 551, 820?

GCD of given numbers 645, 876, 551, 820 is 1

2. How to calculate the greatest common divisor of 645, 876, 551, 820?

We can find the highest common divisor of 645, 876, 551, 820 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 645, 876, 551, 820 i.e 1.

3. How can I use the GCD of 645, 876, 551, 820Calculator?

Out the numbers 645, 876, 551, 820 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.