Online GCD Calculator is useful to find the GCD of 531, 155, 789, 642 quickly. Get the easiest ways to solve the greatest common divisor of 531, 155, 789, 642 i.e 1 in different methods as follows.
Given Input numbers are 531, 155, 789, 642
In the factoring method, we have to find the divisors of all numbers
Divisors of 531 :
The positive integer divisors of 531 that completely divides 531 are.
1, 3, 9, 59, 177, 531
Divisors of 155 :
The positive integer divisors of 155 that completely divides 155 are.
1, 5, 31, 155
Divisors of 789 :
The positive integer divisors of 789 that completely divides 789 are.
1, 3, 263, 789
Divisors of 642 :
The positive integer divisors of 642 that completely divides 642 are.
1, 2, 3, 6, 107, 214, 321, 642
GCD of numbers is the greatest common divisor
So, the GCD (531, 155, 789, 642) = 1.
Given numbers are 531, 155, 789, 642
The list of prime factors of all numbers are
Prime factors of 531 are 3 x 3 x 59
Prime factors of 155 are 5 x 31
Prime factors of 789 are 3 x 263
Prime factors of 642 are 2 x 3 x 107
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 531, 155, 789, 642
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(531, 155) = 82305
GCD(531, 155) = ( 531 x 155 ) / 82305
= 531 / 155
= 531
Step2:
LCM(1, 789) = 789
GCD(1, 789) = ( 1 x 789 ) / 789
= 1 / 789
= 1
Step3:
LCM(1, 642) = 642
GCD(1, 642) = ( 1 x 642 ) / 642
= 1 / 642
= 1
So, Greatest Common Divisor of 531, 155, 789, 642 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 531, 155, 789, 642
The greatest common divisor of numbers 531, 155, 789, 642 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 531, 155, 789, 642 is 1.
1. What is the GCD of 531, 155, 789, 642?
GCD of given numbers 531, 155, 789, 642 is 1
2. How to calculate the greatest common divisor of 531, 155, 789, 642?
We can find the highest common divisor of 531, 155, 789, 642 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 531, 155, 789, 642 i.e 1.
3. How can I use the GCD of 531, 155, 789, 642Calculator?
Out the numbers 531, 155, 789, 642 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.