Online GCD Calculator is useful to find the GCD of 421, 370, 644, 765 quickly. Get the easiest ways to solve the greatest common divisor of 421, 370, 644, 765 i.e 1 in different methods as follows.
Given Input numbers are 421, 370, 644, 765
In the factoring method, we have to find the divisors of all numbers
Divisors of 421 :
The positive integer divisors of 421 that completely divides 421 are.
1, 421
Divisors of 370 :
The positive integer divisors of 370 that completely divides 370 are.
1, 2, 5, 10, 37, 74, 185, 370
Divisors of 644 :
The positive integer divisors of 644 that completely divides 644 are.
1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
Divisors of 765 :
The positive integer divisors of 765 that completely divides 765 are.
1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765
GCD of numbers is the greatest common divisor
So, the GCD (421, 370, 644, 765) = 1.
Given numbers are 421, 370, 644, 765
The list of prime factors of all numbers are
Prime factors of 421 are 421
Prime factors of 370 are 2 x 5 x 37
Prime factors of 644 are 2 x 2 x 7 x 23
Prime factors of 765 are 3 x 3 x 5 x 17
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 421, 370, 644, 765
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(421, 370) = 155770
GCD(421, 370) = ( 421 x 370 ) / 155770
= 421 / 370
= 421
Step2:
LCM(1, 644) = 644
GCD(1, 644) = ( 1 x 644 ) / 644
= 1 / 644
= 1
Step3:
LCM(1, 765) = 765
GCD(1, 765) = ( 1 x 765 ) / 765
= 1 / 765
= 1
So, Greatest Common Divisor of 421, 370, 644, 765 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 421, 370, 644, 765
The greatest common divisor of numbers 421, 370, 644, 765 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 421, 370, 644, 765 is 1.
1. What is the GCD of 421, 370, 644, 765?
GCD of given numbers 421, 370, 644, 765 is 1
2. How to calculate the greatest common divisor of 421, 370, 644, 765?
We can find the highest common divisor of 421, 370, 644, 765 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 421, 370, 644, 765 i.e 1.
3. How can I use the GCD of 421, 370, 644, 765Calculator?
Out the numbers 421, 370, 644, 765 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.