Online GCD Calculator is useful to find the GCD of 640, 772, 689, 491 quickly. Get the easiest ways to solve the greatest common divisor of 640, 772, 689, 491 i.e 1 in different methods as follows.
Given Input numbers are 640, 772, 689, 491
In the factoring method, we have to find the divisors of all numbers
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
Divisors of 772 :
The positive integer divisors of 772 that completely divides 772 are.
1, 2, 4, 193, 386, 772
Divisors of 689 :
The positive integer divisors of 689 that completely divides 689 are.
1, 13, 53, 689
Divisors of 491 :
The positive integer divisors of 491 that completely divides 491 are.
1, 491
GCD of numbers is the greatest common divisor
So, the GCD (640, 772, 689, 491) = 1.
Given numbers are 640, 772, 689, 491
The list of prime factors of all numbers are
Prime factors of 640 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5
Prime factors of 772 are 2 x 2 x 193
Prime factors of 689 are 13 x 53
Prime factors of 491 are 491
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 640, 772, 689, 491
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(640, 772) = 123520
GCD(640, 772) = ( 640 x 772 ) / 123520
= 640 / 772
= 640
Step2:
LCM(4, 689) = 2756
GCD(4, 689) = ( 4 x 689 ) / 2756
= 4 / 689
= 4
Step3:
LCM(1, 491) = 491
GCD(1, 491) = ( 1 x 491 ) / 491
= 1 / 491
= 1
So, Greatest Common Divisor of 640, 772, 689, 491 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 640, 772, 689, 491
The greatest common divisor of numbers 640, 772, 689, 491 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 640, 772, 689, 491 is 1.
1. What is the GCD of 640, 772, 689, 491?
GCD of given numbers 640, 772, 689, 491 is 1
2. How to calculate the greatest common divisor of 640, 772, 689, 491?
We can find the highest common divisor of 640, 772, 689, 491 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 640, 772, 689, 491 i.e 1.
3. How can I use the GCD of 640, 772, 689, 491Calculator?
Out the numbers 640, 772, 689, 491 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.