Online GCD Calculator is useful to find the GCD of 821, 664, 247, 442 quickly. Get the easiest ways to solve the greatest common divisor of 821, 664, 247, 442 i.e 1 in different methods as follows.
Given Input numbers are 821, 664, 247, 442
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 664 :
The positive integer divisors of 664 that completely divides 664 are.
1, 2, 4, 8, 83, 166, 332, 664
Divisors of 247 :
The positive integer divisors of 247 that completely divides 247 are.
1, 13, 19, 247
Divisors of 442 :
The positive integer divisors of 442 that completely divides 442 are.
1, 2, 13, 17, 26, 34, 221, 442
GCD of numbers is the greatest common divisor
So, the GCD (821, 664, 247, 442) = 1.
Given numbers are 821, 664, 247, 442
The list of prime factors of all numbers are
Prime factors of 821 are 821
Prime factors of 664 are 2 x 2 x 2 x 83
Prime factors of 247 are 13 x 19
Prime factors of 442 are 2 x 13 x 17
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 821, 664, 247, 442
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(821, 664) = 545144
GCD(821, 664) = ( 821 x 664 ) / 545144
= 821 / 664
= 821
Step2:
LCM(1, 247) = 247
GCD(1, 247) = ( 1 x 247 ) / 247
= 1 / 247
= 1
Step3:
LCM(1, 442) = 442
GCD(1, 442) = ( 1 x 442 ) / 442
= 1 / 442
= 1
So, Greatest Common Divisor of 821, 664, 247, 442 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 821, 664, 247, 442
The greatest common divisor of numbers 821, 664, 247, 442 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 821, 664, 247, 442 is 1.
1. What is the GCD of 821, 664, 247, 442?
GCD of given numbers 821, 664, 247, 442 is 1
2. How to calculate the greatest common divisor of 821, 664, 247, 442?
We can find the highest common divisor of 821, 664, 247, 442 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, 664, 247, 442 i.e 1.
3. How can I use the GCD of 821, 664, 247, 442Calculator?
Out the numbers 821, 664, 247, 442 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.