Online GCD Calculator is useful to find the GCD of 491, 428, 231, 640 quickly. Get the easiest ways to solve the greatest common divisor of 491, 428, 231, 640 i.e 1 in different methods as follows.
Given Input numbers are 491, 428, 231, 640
In the factoring method, we have to find the divisors of all numbers
Divisors of 491 :
The positive integer divisors of 491 that completely divides 491 are.
1, 491
Divisors of 428 :
The positive integer divisors of 428 that completely divides 428 are.
1, 2, 4, 107, 214, 428
Divisors of 231 :
The positive integer divisors of 231 that completely divides 231 are.
1, 3, 7, 11, 21, 33, 77, 231
Divisors of 640 :
The positive integer divisors of 640 that completely divides 640 are.
1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
GCD of numbers is the greatest common divisor
So, the GCD (491, 428, 231, 640) = 1.
Given numbers are 491, 428, 231, 640
The list of prime factors of all numbers are
Prime factors of 491 are 491
Prime factors of 428 are 2 x 2 x 107
Prime factors of 231 are 3 x 7 x 11
Prime factors of 640 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 491, 428, 231, 640
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(491, 428) = 210148
GCD(491, 428) = ( 491 x 428 ) / 210148
= 491 / 428
= 491
Step2:
LCM(1, 231) = 231
GCD(1, 231) = ( 1 x 231 ) / 231
= 1 / 231
= 1
Step3:
LCM(1, 640) = 640
GCD(1, 640) = ( 1 x 640 ) / 640
= 1 / 640
= 1
So, Greatest Common Divisor of 491, 428, 231, 640 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 491, 428, 231, 640
The greatest common divisor of numbers 491, 428, 231, 640 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 491, 428, 231, 640 is 1.
1. What is the GCD of 491, 428, 231, 640?
GCD of given numbers 491, 428, 231, 640 is 1
2. How to calculate the greatest common divisor of 491, 428, 231, 640?
We can find the highest common divisor of 491, 428, 231, 640 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 491, 428, 231, 640 i.e 1.
3. How can I use the GCD of 491, 428, 231, 640Calculator?
Out the numbers 491, 428, 231, 640 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.