Online GCD Calculator is useful to find the GCD of 689, 248, 621, 644 quickly. Get the easiest ways to solve the greatest common divisor of 689, 248, 621, 644 i.e 1 in different methods as follows.
Given Input numbers are 689, 248, 621, 644
In the factoring method, we have to find the divisors of all numbers
Divisors of 689 :
The positive integer divisors of 689 that completely divides 689 are.
1, 13, 53, 689
Divisors of 248 :
The positive integer divisors of 248 that completely divides 248 are.
1, 2, 4, 8, 31, 62, 124, 248
Divisors of 621 :
The positive integer divisors of 621 that completely divides 621 are.
1, 3, 9, 23, 27, 69, 207, 621
Divisors of 644 :
The positive integer divisors of 644 that completely divides 644 are.
1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
GCD of numbers is the greatest common divisor
So, the GCD (689, 248, 621, 644) = 1.
Given numbers are 689, 248, 621, 644
The list of prime factors of all numbers are
Prime factors of 689 are 13 x 53
Prime factors of 248 are 2 x 2 x 2 x 31
Prime factors of 621 are 3 x 3 x 3 x 23
Prime factors of 644 are 2 x 2 x 7 x 23
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 689, 248, 621, 644
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(689, 248) = 170872
GCD(689, 248) = ( 689 x 248 ) / 170872
= 689 / 248
= 689
Step2:
LCM(1, 621) = 621
GCD(1, 621) = ( 1 x 621 ) / 621
= 1 / 621
= 1
Step3:
LCM(1, 644) = 644
GCD(1, 644) = ( 1 x 644 ) / 644
= 1 / 644
= 1
So, Greatest Common Divisor of 689, 248, 621, 644 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 689, 248, 621, 644
The greatest common divisor of numbers 689, 248, 621, 644 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 689, 248, 621, 644 is 1.
1. What is the GCD of 689, 248, 621, 644?
GCD of given numbers 689, 248, 621, 644 is 1
2. How to calculate the greatest common divisor of 689, 248, 621, 644?
We can find the highest common divisor of 689, 248, 621, 644 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 689, 248, 621, 644 i.e 1.
3. How can I use the GCD of 689, 248, 621, 644Calculator?
Out the numbers 689, 248, 621, 644 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.