Online GCD Calculator is useful to find the GCD of 408, 385, 691 quickly. Get the easiest ways to solve the greatest common divisor of 408, 385, 691 i.e 1 in different methods as follows.
Given Input numbers are 408, 385, 691
In the factoring method, we have to find the divisors of all numbers
Divisors of 408 :
The positive integer divisors of 408 that completely divides 408 are.
1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408
Divisors of 385 :
The positive integer divisors of 385 that completely divides 385 are.
1, 5, 7, 11, 35, 55, 77, 385
Divisors of 691 :
The positive integer divisors of 691 that completely divides 691 are.
1, 691
GCD of numbers is the greatest common divisor
So, the GCD (408, 385, 691) = 1.
Given numbers are 408, 385, 691
The list of prime factors of all numbers are
Prime factors of 408 are 2 x 2 x 2 x 3 x 17
Prime factors of 385 are 5 x 7 x 11
Prime factors of 691 are 691
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 408, 385, 691
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(408, 385) = 157080
GCD(408, 385) = ( 408 x 385 ) / 157080
= 408 / 385
= 408
Step2:
LCM(1, 691) = 691
GCD(1, 691) = ( 1 x 691 ) / 691
= 1 / 691
= 1
So, Greatest Common Divisor of 408, 385, 691 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 408, 385, 691
The greatest common divisor of numbers 408, 385, 691 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 408, 385, 691 is 1.
1. What is the GCD of 408, 385, 691?
GCD of given numbers 408, 385, 691 is 1
2. How to calculate the greatest common divisor of 408, 385, 691?
We can find the highest common divisor of 408, 385, 691 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 408, 385, 691 i.e 1.
3. How can I use the GCD of 408, 385, 691Calculator?
Out the numbers 408, 385, 691 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.