GCD of 821, 221, 668, 624 Calculator

Given Input numbers are 821, 221, 668, 624

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 221 :

The positive integer divisors of 221 that completely divides 221 are.

1, 13, 17, 221

Divisors of 668 :

The positive integer divisors of 668 that completely divides 668 are.

1, 2, 4, 167, 334, 668

Divisors of 624 :

The positive integer divisors of 624 that completely divides 624 are.

1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624

GCD of numbers is the greatest common divisor

So, the GCD (821, 221, 668, 624) = 1.

Given numbers are 821, 221, 668, 624

The list of prime factors of all numbers are

Prime factors of 821 are 821

Prime factors of 221 are 13 x 17

Prime factors of 668 are 2 x 2 x 167

Prime factors of 624 are 2 x 2 x 2 x 2 x 3 x 13

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

Given numbers are 821, 221, 668, 624

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

Apply this formula for all numbers.

Step1:

LCM(821, 221) = 181441

GCD(821, 221) = ( 821 x 221 ) / 181441

= 821 / 221

= 821

Step2:

LCM(1, 668) = 668

GCD(1, 668) = ( 1 x 668 ) / 668

= 1 / 668

= 1

Step3:

LCM(1, 624) = 624

GCD(1, 624) = ( 1 x 624 ) / 624

= 1 / 624

= 1

So, Greatest Common Divisor of 821, 221, 668, 624 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 379, 654, 700, 215
• GCD of 689, 791, 404, 912
• GCD of 334, 493, 303, 956
• GCD of 465, 532, 141, 712
• GCD of 915, 913, 825, 374

Given numbers are 821, 221, 668, 624
The greatest common divisor of numbers 821, 221, 668, 624 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 821, 221, 668, 624 is 1.

1. What is the GCD of 821, 221, 668, 624?

GCD of given numbers 821, 221, 668, 624 is 1

2. How to calculate the greatest common divisor of 821, 221, 668, 624?

We can find the highest common divisor of 821, 221, 668, 624 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, 221, 668, 624 i.e 1.

3. How can I use the GCD of 821, 221, 668, 624Calculator?

Out the numbers 821, 221, 668, 624 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.