Online GCD Calculator is useful to find the GCD of 387, 988, 780, 978 quickly. Get the easiest ways to solve the greatest common divisor of 387, 988, 780, 978 i.e 1 in different methods as follows.
Given Input numbers are 387, 988, 780, 978
In the factoring method, we have to find the divisors of all numbers
Divisors of 387 :
The positive integer divisors of 387 that completely divides 387 are.
1, 3, 9, 43, 129, 387
Divisors of 988 :
The positive integer divisors of 988 that completely divides 988 are.
1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
Divisors of 780 :
The positive integer divisors of 780 that completely divides 780 are.
1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
Divisors of 978 :
The positive integer divisors of 978 that completely divides 978 are.
1, 2, 3, 6, 163, 326, 489, 978
GCD of numbers is the greatest common divisor
So, the GCD (387, 988, 780, 978) = 1.
Given numbers are 387, 988, 780, 978
The list of prime factors of all numbers are
Prime factors of 387 are 3 x 3 x 43
Prime factors of 988 are 2 x 2 x 13 x 19
Prime factors of 780 are 2 x 2 x 3 x 5 x 13
Prime factors of 978 are 2 x 3 x 163
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 387, 988, 780, 978
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(387, 988) = 382356
GCD(387, 988) = ( 387 x 988 ) / 382356
= 387 / 988
= 387
Step2:
LCM(1, 780) = 780
GCD(1, 780) = ( 1 x 780 ) / 780
= 1 / 780
= 1
Step3:
LCM(1, 978) = 978
GCD(1, 978) = ( 1 x 978 ) / 978
= 1 / 978
= 1
So, Greatest Common Divisor of 387, 988, 780, 978 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 387, 988, 780, 978
The greatest common divisor of numbers 387, 988, 780, 978 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 387, 988, 780, 978 is 1.
1. What is the GCD of 387, 988, 780, 978?
GCD of given numbers 387, 988, 780, 978 is 1
2. How to calculate the greatest common divisor of 387, 988, 780, 978?
We can find the highest common divisor of 387, 988, 780, 978 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 387, 988, 780, 978 i.e 1.
3. How can I use the GCD of 387, 988, 780, 978Calculator?
Out the numbers 387, 988, 780, 978 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.