Online GCD Calculator is useful to find the GCD of 221, 840, 349, 813 quickly. Get the easiest ways to solve the greatest common divisor of 221, 840, 349, 813 i.e 1 in different methods as follows.
Given Input numbers are 221, 840, 349, 813
In the factoring method, we have to find the divisors of all numbers
Divisors of 221 :
The positive integer divisors of 221 that completely divides 221 are.
1, 13, 17, 221
Divisors of 840 :
The positive integer divisors of 840 that completely divides 840 are.
1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
Divisors of 349 :
The positive integer divisors of 349 that completely divides 349 are.
1, 349
Divisors of 813 :
The positive integer divisors of 813 that completely divides 813 are.
1, 3, 271, 813
GCD of numbers is the greatest common divisor
So, the GCD (221, 840, 349, 813) = 1.
Given numbers are 221, 840, 349, 813
The list of prime factors of all numbers are
Prime factors of 221 are 13 x 17
Prime factors of 840 are 2 x 2 x 2 x 3 x 5 x 7
Prime factors of 349 are 349
Prime factors of 813 are 3 x 271
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 221, 840, 349, 813
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(221, 840) = 185640
GCD(221, 840) = ( 221 x 840 ) / 185640
= 221 / 840
= 221
Step2:
LCM(1, 349) = 349
GCD(1, 349) = ( 1 x 349 ) / 349
= 1 / 349
= 1
Step3:
LCM(1, 813) = 813
GCD(1, 813) = ( 1 x 813 ) / 813
= 1 / 813
= 1
So, Greatest Common Divisor of 221, 840, 349, 813 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 221, 840, 349, 813
The greatest common divisor of numbers 221, 840, 349, 813 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 221, 840, 349, 813 is 1.
1. What is the GCD of 221, 840, 349, 813?
GCD of given numbers 221, 840, 349, 813 is 1
2. How to calculate the greatest common divisor of 221, 840, 349, 813?
We can find the highest common divisor of 221, 840, 349, 813 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 221, 840, 349, 813 i.e 1.
3. How can I use the GCD of 221, 840, 349, 813Calculator?
Out the numbers 221, 840, 349, 813 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.