Online GCD Calculator is useful to find the GCD of 815, 620, 650, 645 quickly. Get the easiest ways to solve the greatest common divisor of 815, 620, 650, 645 i.e 5 in different methods as follows.
Given Input numbers are 815, 620, 650, 645
In the factoring method, we have to find the divisors of all numbers
Divisors of 815 :
The positive integer divisors of 815 that completely divides 815 are.
1, 5, 163, 815
Divisors of 620 :
The positive integer divisors of 620 that completely divides 620 are.
1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
Divisors of 650 :
The positive integer divisors of 650 that completely divides 650 are.
1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650
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 (815, 620, 650, 645) = 5.
Given numbers are 815, 620, 650, 645
The list of prime factors of all numbers are
Prime factors of 815 are 5 x 163
Prime factors of 620 are 2 x 2 x 5 x 31
Prime factors of 650 are 2 x 5 x 5 x 13
Prime factors of 645 are 3 x 5 x 43
The highest common occurrence is 51
Therefore, GCD of 815, 620, 650, 645 is 5.
Given numbers are 815, 620, 650, 645
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(815, 620) = 101060
GCD(815, 620) = ( 815 x 620 ) / 101060
= 815 / 620
= 815
Step2:
LCM(5, 650) = 650
GCD(5, 650) = ( 5 x 650 ) / 650
= 5 / 650
= 5
Step3:
LCM(5, 645) = 645
GCD(5, 645) = ( 5 x 645 ) / 645
= 5 / 645
= 5
So, Greatest Common Divisor of 815, 620, 650, 645 is 5
Here are some samples of GCD of Numbers calculations.
Given numbers are 815, 620, 650, 645
The greatest common divisor of numbers 815, 620, 650, 645 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 815, 620, 650, 645 is 5.
1. What is the GCD of 815, 620, 650, 645?
GCD of given numbers 815, 620, 650, 645 is 5
2. How to calculate the greatest common divisor of 815, 620, 650, 645?
We can find the highest common divisor of 815, 620, 650, 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 815, 620, 650, 645 i.e 5.
3. How can I use the GCD of 815, 620, 650, 645Calculator?
Out the numbers 815, 620, 650, 645 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.