Online GCD Calculator is useful to find the GCD of 680, 406, 788, 155 quickly. Get the easiest ways to solve the greatest common divisor of 680, 406, 788, 155 i.e 1 in different methods as follows.
Given Input numbers are 680, 406, 788, 155
In the factoring method, we have to find the divisors of all numbers
Divisors of 680 :
The positive integer divisors of 680 that completely divides 680 are.
1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
Divisors of 406 :
The positive integer divisors of 406 that completely divides 406 are.
1, 2, 7, 14, 29, 58, 203, 406
Divisors of 788 :
The positive integer divisors of 788 that completely divides 788 are.
1, 2, 4, 197, 394, 788
Divisors of 155 :
The positive integer divisors of 155 that completely divides 155 are.
1, 5, 31, 155
GCD of numbers is the greatest common divisor
So, the GCD (680, 406, 788, 155) = 1.
Given numbers are 680, 406, 788, 155
The list of prime factors of all numbers are
Prime factors of 680 are 2 x 2 x 2 x 5 x 17
Prime factors of 406 are 2 x 7 x 29
Prime factors of 788 are 2 x 2 x 197
Prime factors of 155 are 5 x 31
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 680, 406, 788, 155
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(680, 406) = 138040
GCD(680, 406) = ( 680 x 406 ) / 138040
= 680 / 406
= 680
Step2:
LCM(2, 788) = 788
GCD(2, 788) = ( 2 x 788 ) / 788
= 2 / 788
= 2
Step3:
LCM(2, 155) = 310
GCD(2, 155) = ( 2 x 155 ) / 310
= 2 / 155
= 2
So, Greatest Common Divisor of 680, 406, 788, 155 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 680, 406, 788, 155
The greatest common divisor of numbers 680, 406, 788, 155 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 680, 406, 788, 155 is 1.
1. What is the GCD of 680, 406, 788, 155?
GCD of given numbers 680, 406, 788, 155 is 1
2. How to calculate the greatest common divisor of 680, 406, 788, 155?
We can find the highest common divisor of 680, 406, 788, 155 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 680, 406, 788, 155 i.e 1.
3. How can I use the GCD of 680, 406, 788, 155Calculator?
Out the numbers 680, 406, 788, 155 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.