Online GCD Calculator is useful to find the GCD of 390, 355, 13, 124 quickly. Get the easiest ways to solve the greatest common divisor of 390, 355, 13, 124 i.e 1 in different methods as follows.
Given Input numbers are 390, 355, 13, 124
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 355 :
The positive integer divisors of 355 that completely divides 355 are.
1, 5, 71, 355
Divisors of 13 :
The positive integer divisors of 13 that completely divides 13 are.
1, 13
Divisors of 124 :
The positive integer divisors of 124 that completely divides 124 are.
1, 2, 4, 31, 62, 124
GCD of numbers is the greatest common divisor
So, the GCD (390, 355, 13, 124) = 1.
Given numbers are 390, 355, 13, 124
The list of prime factors of all numbers are
Prime factors of 390 are 2 x 3 x 5 x 13
Prime factors of 355 are 5 x 71
Prime factors of 13 are 13
Prime factors of 124 are 2 x 2 x 31
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 390, 355, 13, 124
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(390, 355) = 27690
GCD(390, 355) = ( 390 x 355 ) / 27690
= 390 / 355
= 390
Step2:
LCM(5, 13) = 65
GCD(5, 13) = ( 5 x 13 ) / 65
= 5 / 13
= 5
Step3:
LCM(1, 124) = 124
GCD(1, 124) = ( 1 x 124 ) / 124
= 1 / 124
= 1
So, Greatest Common Divisor of 390, 355, 13, 124 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 390, 355, 13, 124
The greatest common divisor of numbers 390, 355, 13, 124 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 355, 13, 124 is 1.
1. What is the GCD of 390, 355, 13, 124?
GCD of given numbers 390, 355, 13, 124 is 1
2. How to calculate the greatest common divisor of 390, 355, 13, 124?
We can find the highest common divisor of 390, 355, 13, 124 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, 355, 13, 124 i.e 1.
3. How can I use the GCD of 390, 355, 13, 124Calculator?
Out the numbers 390, 355, 13, 124 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.