Online GCD Calculator is useful to find the GCD of 628, 644, 957, 391 quickly. Get the easiest ways to solve the greatest common divisor of 628, 644, 957, 391 i.e 1 in different methods as follows.
Given Input numbers are 628, 644, 957, 391
In the factoring method, we have to find the divisors of all numbers
Divisors of 628 :
The positive integer divisors of 628 that completely divides 628 are.
1, 2, 4, 157, 314, 628
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
Divisors of 957 :
The positive integer divisors of 957 that completely divides 957 are.
1, 3, 11, 29, 33, 87, 319, 957
Divisors of 391 :
The positive integer divisors of 391 that completely divides 391 are.
1, 17, 23, 391
GCD of numbers is the greatest common divisor
So, the GCD (628, 644, 957, 391) = 1.
Given numbers are 628, 644, 957, 391
The list of prime factors of all numbers are
Prime factors of 628 are 2 x 2 x 157
Prime factors of 644 are 2 x 2 x 7 x 23
Prime factors of 957 are 3 x 11 x 29
Prime factors of 391 are 17 x 23
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 628, 644, 957, 391
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(628, 644) = 101108
GCD(628, 644) = ( 628 x 644 ) / 101108
= 628 / 644
= 628
Step2:
LCM(4, 957) = 3828
GCD(4, 957) = ( 4 x 957 ) / 3828
= 4 / 957
= 4
Step3:
LCM(1, 391) = 391
GCD(1, 391) = ( 1 x 391 ) / 391
= 1 / 391
= 1
So, Greatest Common Divisor of 628, 644, 957, 391 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 628, 644, 957, 391
The greatest common divisor of numbers 628, 644, 957, 391 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 628, 644, 957, 391 is 1.
1. What is the GCD of 628, 644, 957, 391?
GCD of given numbers 628, 644, 957, 391 is 1
2. How to calculate the greatest common divisor of 628, 644, 957, 391?
We can find the highest common divisor of 628, 644, 957, 391 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 628, 644, 957, 391 i.e 1.
3. How can I use the GCD of 628, 644, 957, 391Calculator?
Out the numbers 628, 644, 957, 391 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.