Online GCD Calculator is useful to find the GCD of 390, 349, 371, 221 quickly. Get the easiest ways to solve the greatest common divisor of 390, 349, 371, 221 i.e 1 in different methods as follows.
Given Input numbers are 390, 349, 371, 221
In the factoring method, we have to find the divisors of all numbers
Divisors of 390 :
The positive integer divisors of 390 that completely divides 390 are.
1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
Divisors of 349 :
The positive integer divisors of 349 that completely divides 349 are.
1, 349
Divisors of 371 :
The positive integer divisors of 371 that completely divides 371 are.
1, 7, 53, 371
Divisors of 221 :
The positive integer divisors of 221 that completely divides 221 are.
1, 13, 17, 221
GCD of numbers is the greatest common divisor
So, the GCD (390, 349, 371, 221) = 1.
Given numbers are 390, 349, 371, 221
The list of prime factors of all numbers are
Prime factors of 390 are 2 x 3 x 5 x 13
Prime factors of 349 are 349
Prime factors of 371 are 7 x 53
Prime factors of 221 are 13 x 17
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 390, 349, 371, 221
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(390, 349) = 136110
GCD(390, 349) = ( 390 x 349 ) / 136110
= 390 / 349
= 390
Step2:
LCM(1, 371) = 371
GCD(1, 371) = ( 1 x 371 ) / 371
= 1 / 371
= 1
Step3:
LCM(1, 221) = 221
GCD(1, 221) = ( 1 x 221 ) / 221
= 1 / 221
= 1
So, Greatest Common Divisor of 390, 349, 371, 221 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 390, 349, 371, 221
The greatest common divisor of numbers 390, 349, 371, 221 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 349, 371, 221 is 1.
1. What is the GCD of 390, 349, 371, 221?
GCD of given numbers 390, 349, 371, 221 is 1
2. How to calculate the greatest common divisor of 390, 349, 371, 221?
We can find the highest common divisor of 390, 349, 371, 221 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 390, 349, 371, 221 i.e 1.
3. How can I use the GCD of 390, 349, 371, 221Calculator?
Out the numbers 390, 349, 371, 221 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.