Online GCD Calculator is useful to find the GCD of 391, 393, 802, 921 quickly. Get the easiest ways to solve the greatest common divisor of 391, 393, 802, 921 i.e 1 in different methods as follows.
Given Input numbers are 391, 393, 802, 921
In the factoring method, we have to find the divisors of all numbers
Divisors of 391 :
The positive integer divisors of 391 that completely divides 391 are.
1, 17, 23, 391
Divisors of 393 :
The positive integer divisors of 393 that completely divides 393 are.
1, 3, 131, 393
Divisors of 802 :
The positive integer divisors of 802 that completely divides 802 are.
1, 2, 401, 802
Divisors of 921 :
The positive integer divisors of 921 that completely divides 921 are.
1, 3, 307, 921
GCD of numbers is the greatest common divisor
So, the GCD (391, 393, 802, 921) = 1.
Given numbers are 391, 393, 802, 921
The list of prime factors of all numbers are
Prime factors of 391 are 17 x 23
Prime factors of 393 are 3 x 131
Prime factors of 802 are 2 x 401
Prime factors of 921 are 3 x 307
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 391, 393, 802, 921
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(391, 393) = 153663
GCD(391, 393) = ( 391 x 393 ) / 153663
= 391 / 393
= 391
Step2:
LCM(1, 802) = 802
GCD(1, 802) = ( 1 x 802 ) / 802
= 1 / 802
= 1
Step3:
LCM(1, 921) = 921
GCD(1, 921) = ( 1 x 921 ) / 921
= 1 / 921
= 1
So, Greatest Common Divisor of 391, 393, 802, 921 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 391, 393, 802, 921
The greatest common divisor of numbers 391, 393, 802, 921 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 391, 393, 802, 921 is 1.
1. What is the GCD of 391, 393, 802, 921?
GCD of given numbers 391, 393, 802, 921 is 1
2. How to calculate the greatest common divisor of 391, 393, 802, 921?
We can find the highest common divisor of 391, 393, 802, 921 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 391, 393, 802, 921 i.e 1.
3. How can I use the GCD of 391, 393, 802, 921Calculator?
Out the numbers 391, 393, 802, 921 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.