Online GCD Calculator is useful to find the GCD of 138, 607, 646, 639 quickly. Get the easiest ways to solve the greatest common divisor of 138, 607, 646, 639 i.e 1 in different methods as follows.
Given Input numbers are 138, 607, 646, 639
In the factoring method, we have to find the divisors of all numbers
Divisors of 138 :
The positive integer divisors of 138 that completely divides 138 are.
1, 2, 3, 6, 23, 46, 69, 138
Divisors of 607 :
The positive integer divisors of 607 that completely divides 607 are.
1, 607
Divisors of 646 :
The positive integer divisors of 646 that completely divides 646 are.
1, 2, 17, 19, 34, 38, 323, 646
Divisors of 639 :
The positive integer divisors of 639 that completely divides 639 are.
1, 3, 9, 71, 213, 639
GCD of numbers is the greatest common divisor
So, the GCD (138, 607, 646, 639) = 1.
Given numbers are 138, 607, 646, 639
The list of prime factors of all numbers are
Prime factors of 138 are 2 x 3 x 23
Prime factors of 607 are 607
Prime factors of 646 are 2 x 17 x 19
Prime factors of 639 are 3 x 3 x 71
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 138, 607, 646, 639
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(138, 607) = 83766
GCD(138, 607) = ( 138 x 607 ) / 83766
= 138 / 607
= 138
Step2:
LCM(1, 646) = 646
GCD(1, 646) = ( 1 x 646 ) / 646
= 1 / 646
= 1
Step3:
LCM(1, 639) = 639
GCD(1, 639) = ( 1 x 639 ) / 639
= 1 / 639
= 1
So, Greatest Common Divisor of 138, 607, 646, 639 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 138, 607, 646, 639
The greatest common divisor of numbers 138, 607, 646, 639 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 138, 607, 646, 639 is 1.
1. What is the GCD of 138, 607, 646, 639?
GCD of given numbers 138, 607, 646, 639 is 1
2. How to calculate the greatest common divisor of 138, 607, 646, 639?
We can find the highest common divisor of 138, 607, 646, 639 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 138, 607, 646, 639 i.e 1.
3. How can I use the GCD of 138, 607, 646, 639Calculator?
Out the numbers 138, 607, 646, 639 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.