Online GCD Calculator is useful to find the GCD of 858, 455, 155, 987 quickly. Get the easiest ways to solve the greatest common divisor of 858, 455, 155, 987 i.e 1 in different methods as follows.
Given Input numbers are 858, 455, 155, 987
In the factoring method, we have to find the divisors of all numbers
Divisors of 858 :
The positive integer divisors of 858 that completely divides 858 are.
1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858
Divisors of 455 :
The positive integer divisors of 455 that completely divides 455 are.
1, 5, 7, 13, 35, 65, 91, 455
Divisors of 155 :
The positive integer divisors of 155 that completely divides 155 are.
1, 5, 31, 155
Divisors of 987 :
The positive integer divisors of 987 that completely divides 987 are.
1, 3, 7, 21, 47, 141, 329, 987
GCD of numbers is the greatest common divisor
So, the GCD (858, 455, 155, 987) = 1.
Given numbers are 858, 455, 155, 987
The list of prime factors of all numbers are
Prime factors of 858 are 2 x 3 x 11 x 13
Prime factors of 455 are 5 x 7 x 13
Prime factors of 155 are 5 x 31
Prime factors of 987 are 3 x 7 x 47
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 858, 455, 155, 987
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(858, 455) = 30030
GCD(858, 455) = ( 858 x 455 ) / 30030
= 858 / 455
= 858
Step2:
LCM(13, 155) = 2015
GCD(13, 155) = ( 13 x 155 ) / 2015
= 13 / 155
= 13
Step3:
LCM(1, 987) = 987
GCD(1, 987) = ( 1 x 987 ) / 987
= 1 / 987
= 1
So, Greatest Common Divisor of 858, 455, 155, 987 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 858, 455, 155, 987
The greatest common divisor of numbers 858, 455, 155, 987 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 858, 455, 155, 987 is 1.
1. What is the GCD of 858, 455, 155, 987?
GCD of given numbers 858, 455, 155, 987 is 1
2. How to calculate the greatest common divisor of 858, 455, 155, 987?
We can find the highest common divisor of 858, 455, 155, 987 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 858, 455, 155, 987 i.e 1.
3. How can I use the GCD of 858, 455, 155, 987Calculator?
Out the numbers 858, 455, 155, 987 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.