Online GCD Calculator is useful to find the GCD of 680, 210, 645 quickly. Get the easiest ways to solve the greatest common divisor of 680, 210, 645 i.e 5 in different methods as follows.
Given Input numbers are 680, 210, 645
In the factoring method, we have to find the divisors of all numbers
Divisors of 680 :
The positive integer divisors of 680 that completely divides 680 are.
1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
Divisors of 210 :
The positive integer divisors of 210 that completely divides 210 are.
1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
Divisors of 645 :
The positive integer divisors of 645 that completely divides 645 are.
1, 3, 5, 15, 43, 129, 215, 645
GCD of numbers is the greatest common divisor
So, the GCD (680, 210, 645) = 5.
Given numbers are 680, 210, 645
The list of prime factors of all numbers are
Prime factors of 680 are 2 x 2 x 2 x 5 x 17
Prime factors of 210 are 2 x 3 x 5 x 7
Prime factors of 645 are 3 x 5 x 43
The highest common occurrence is 51
Therefore, GCD of 680, 210, 645 is 5.
Given numbers are 680, 210, 645
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(680, 210) = 14280
GCD(680, 210) = ( 680 x 210 ) / 14280
= 680 / 210
= 680
Step2:
LCM(10, 645) = 1290
GCD(10, 645) = ( 10 x 645 ) / 1290
= 10 / 645
= 10
So, Greatest Common Divisor of 680, 210, 645 is 5
Here are some samples of GCD of Numbers calculations.
Given numbers are 680, 210, 645
The greatest common divisor of numbers 680, 210, 645 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 680, 210, 645 is 5.
1. What is the GCD of 680, 210, 645?
GCD of given numbers 680, 210, 645 is 5
2. How to calculate the greatest common divisor of 680, 210, 645?
We can find the highest common divisor of 680, 210, 645 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 680, 210, 645 i.e 5.
3. How can I use the GCD of 680, 210, 645Calculator?
Out the numbers 680, 210, 645 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.