GCD of 639, 690, 156 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 639, 690, 156 quickly. Get the easiest ways to solve the greatest common divisor of 639, 690, 156 i.e 3 in different methods as follows.
Given Input numbers are 639, 690, 156
In the factoring method, we have to find the divisors of all numbers
Divisors of 639 :
The positive integer divisors of 639 that completely divides 639 are.
1, 3, 9, 71, 213, 639
Divisors of 690 :
The positive integer divisors of 690 that completely divides 690 are.
1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
Divisors of 156 :
The positive integer divisors of 156 that completely divides 156 are.
1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156
GCD of numbers is the greatest common divisor
So, the GCD (639, 690, 156) = 3.
Given numbers are 639, 690, 156
The list of prime factors of all numbers are
Prime factors of 639 are 3 x 3 x 71
Prime factors of 690 are 2 x 3 x 5 x 23
Prime factors of 156 are 2 x 2 x 3 x 13
The highest common occurrence is 31
Therefore, GCD of 639, 690, 156 is 3.
Steps to Calculate GCD of 639, 690, 156 using LCM Formula
Given numbers are 639, 690, 156
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(639, 690) = 146970
GCD(639, 690) = ( 639 x 690 ) / 146970
= 639 / 690
= 639
Step2:
LCM(3, 156) = 156
GCD(3, 156) = ( 3 x 156 ) / 156
= 3 / 156
= 3
So, Greatest Common Divisor of 639, 690, 156 is 3
GCD of Numbers Calculation Examples
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Greatest Common Divisor of 639, 690, 156
Given numbers are 639, 690, 156
The greatest common divisor of numbers 639, 690, 156 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 639, 690, 156 is 3.
FAQs on GCD of 639, 690, 156 Calculator
1. What is the GCD of 639, 690, 156?
GCD of given numbers 639, 690, 156 is 3
2. How to calculate the greatest common divisor of 639, 690, 156?
We can find the highest common divisor of 639, 690, 156 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 639, 690, 156 i.e 3.
3. How can I use the GCD of 639, 690, 156Calculator?
Out the numbers 639, 690, 156 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.