Online GCD Calculator is useful to find the GCD of 121, 990, 639, 216 quickly. Get the easiest ways to solve the greatest common divisor of 121, 990, 639, 216 i.e 1 in different methods as follows.
Given Input numbers are 121, 990, 639, 216
In the factoring method, we have to find the divisors of all numbers
Divisors of 121 :
The positive integer divisors of 121 that completely divides 121 are.
1, 11, 121
Divisors of 990 :
The positive integer divisors of 990 that completely divides 990 are.
1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
Divisors of 639 :
The positive integer divisors of 639 that completely divides 639 are.
1, 3, 9, 71, 213, 639
Divisors of 216 :
The positive integer divisors of 216 that completely divides 216 are.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216
GCD of numbers is the greatest common divisor
So, the GCD (121, 990, 639, 216) = 1.
Given numbers are 121, 990, 639, 216
The list of prime factors of all numbers are
Prime factors of 121 are 11 x 11
Prime factors of 990 are 2 x 3 x 3 x 5 x 11
Prime factors of 639 are 3 x 3 x 71
Prime factors of 216 are 2 x 2 x 2 x 3 x 3 x 3
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 121, 990, 639, 216
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(121, 990) = 10890
GCD(121, 990) = ( 121 x 990 ) / 10890
= 121 / 990
= 121
Step2:
LCM(11, 639) = 7029
GCD(11, 639) = ( 11 x 639 ) / 7029
= 11 / 639
= 11
Step3:
LCM(1, 216) = 216
GCD(1, 216) = ( 1 x 216 ) / 216
= 1 / 216
= 1
So, Greatest Common Divisor of 121, 990, 639, 216 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 121, 990, 639, 216
The greatest common divisor of numbers 121, 990, 639, 216 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 121, 990, 639, 216 is 1.
1. What is the GCD of 121, 990, 639, 216?
GCD of given numbers 121, 990, 639, 216 is 1
2. How to calculate the greatest common divisor of 121, 990, 639, 216?
We can find the highest common divisor of 121, 990, 639, 216 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 121, 990, 639, 216 i.e 1.
3. How can I use the GCD of 121, 990, 639, 216Calculator?
Out the numbers 121, 990, 639, 216 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.