Online GCD Calculator is useful to find the GCD of 398, 521, 218, 721 quickly. Get the easiest ways to solve the greatest common divisor of 398, 521, 218, 721 i.e 1 in different methods as follows.
Given Input numbers are 398, 521, 218, 721
In the factoring method, we have to find the divisors of all numbers
Divisors of 398 :
The positive integer divisors of 398 that completely divides 398 are.
1, 2, 199, 398
Divisors of 521 :
The positive integer divisors of 521 that completely divides 521 are.
1, 521
Divisors of 218 :
The positive integer divisors of 218 that completely divides 218 are.
1, 2, 109, 218
Divisors of 721 :
The positive integer divisors of 721 that completely divides 721 are.
1, 7, 103, 721
GCD of numbers is the greatest common divisor
So, the GCD (398, 521, 218, 721) = 1.
Given numbers are 398, 521, 218, 721
The list of prime factors of all numbers are
Prime factors of 398 are 2 x 199
Prime factors of 521 are 521
Prime factors of 218 are 2 x 109
Prime factors of 721 are 7 x 103
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 398, 521, 218, 721
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(398, 521) = 207358
GCD(398, 521) = ( 398 x 521 ) / 207358
= 398 / 521
= 398
Step2:
LCM(1, 218) = 218
GCD(1, 218) = ( 1 x 218 ) / 218
= 1 / 218
= 1
Step3:
LCM(1, 721) = 721
GCD(1, 721) = ( 1 x 721 ) / 721
= 1 / 721
= 1
So, Greatest Common Divisor of 398, 521, 218, 721 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 398, 521, 218, 721
The greatest common divisor of numbers 398, 521, 218, 721 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 398, 521, 218, 721 is 1.
1. What is the GCD of 398, 521, 218, 721?
GCD of given numbers 398, 521, 218, 721 is 1
2. How to calculate the greatest common divisor of 398, 521, 218, 721?
We can find the highest common divisor of 398, 521, 218, 721 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 398, 521, 218, 721 i.e 1.
3. How can I use the GCD of 398, 521, 218, 721Calculator?
Out the numbers 398, 521, 218, 721 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.