Online GCD Calculator is useful to find the GCD of 420, 133, 665, 349 quickly. Get the easiest ways to solve the greatest common divisor of 420, 133, 665, 349 i.e 1 in different methods as follows.
Given Input numbers are 420, 133, 665, 349
In the factoring method, we have to find the divisors of all numbers
Divisors of 420 :
The positive integer divisors of 420 that completely divides 420 are.
1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
Divisors of 133 :
The positive integer divisors of 133 that completely divides 133 are.
1, 7, 19, 133
Divisors of 665 :
The positive integer divisors of 665 that completely divides 665 are.
1, 5, 7, 19, 35, 95, 133, 665
Divisors of 349 :
The positive integer divisors of 349 that completely divides 349 are.
1, 349
GCD of numbers is the greatest common divisor
So, the GCD (420, 133, 665, 349) = 1.
Given numbers are 420, 133, 665, 349
The list of prime factors of all numbers are
Prime factors of 420 are 2 x 2 x 3 x 5 x 7
Prime factors of 133 are 7 x 19
Prime factors of 665 are 5 x 7 x 19
Prime factors of 349 are 349
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 420, 133, 665, 349
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(420, 133) = 7980
GCD(420, 133) = ( 420 x 133 ) / 7980
= 420 / 133
= 420
Step2:
LCM(7, 665) = 665
GCD(7, 665) = ( 7 x 665 ) / 665
= 7 / 665
= 7
Step3:
LCM(7, 349) = 2443
GCD(7, 349) = ( 7 x 349 ) / 2443
= 7 / 349
= 7
So, Greatest Common Divisor of 420, 133, 665, 349 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 420, 133, 665, 349
The greatest common divisor of numbers 420, 133, 665, 349 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 420, 133, 665, 349 is 1.
1. What is the GCD of 420, 133, 665, 349?
GCD of given numbers 420, 133, 665, 349 is 1
2. How to calculate the greatest common divisor of 420, 133, 665, 349?
We can find the highest common divisor of 420, 133, 665, 349 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 420, 133, 665, 349 i.e 1.
3. How can I use the GCD of 420, 133, 665, 349Calculator?
Out the numbers 420, 133, 665, 349 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.