Online GCD Calculator is useful to find the GCD of 405, 402, 390, 878 quickly. Get the easiest ways to solve the greatest common divisor of 405, 402, 390, 878 i.e 1 in different methods as follows.
Given Input numbers are 405, 402, 390, 878
In the factoring method, we have to find the divisors of all numbers
Divisors of 405 :
The positive integer divisors of 405 that completely divides 405 are.
1, 3, 5, 9, 15, 27, 45, 81, 135, 405
Divisors of 402 :
The positive integer divisors of 402 that completely divides 402 are.
1, 2, 3, 6, 67, 134, 201, 402
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 878 :
The positive integer divisors of 878 that completely divides 878 are.
1, 2, 439, 878
GCD of numbers is the greatest common divisor
So, the GCD (405, 402, 390, 878) = 1.
Given numbers are 405, 402, 390, 878
The list of prime factors of all numbers are
Prime factors of 405 are 3 x 3 x 3 x 3 x 5
Prime factors of 402 are 2 x 3 x 67
Prime factors of 390 are 2 x 3 x 5 x 13
Prime factors of 878 are 2 x 439
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 405, 402, 390, 878
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(405, 402) = 54270
GCD(405, 402) = ( 405 x 402 ) / 54270
= 405 / 402
= 405
Step2:
LCM(3, 390) = 390
GCD(3, 390) = ( 3 x 390 ) / 390
= 3 / 390
= 3
Step3:
LCM(3, 878) = 2634
GCD(3, 878) = ( 3 x 878 ) / 2634
= 3 / 878
= 3
So, Greatest Common Divisor of 405, 402, 390, 878 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 405, 402, 390, 878
The greatest common divisor of numbers 405, 402, 390, 878 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 405, 402, 390, 878 is 1.
1. What is the GCD of 405, 402, 390, 878?
GCD of given numbers 405, 402, 390, 878 is 1
2. How to calculate the greatest common divisor of 405, 402, 390, 878?
We can find the highest common divisor of 405, 402, 390, 878 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 405, 402, 390, 878 i.e 1.
3. How can I use the GCD of 405, 402, 390, 878Calculator?
Out the numbers 405, 402, 390, 878 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.