Online GCD Calculator is useful to find the GCD of 747, 136, 129, 420 quickly. Get the easiest ways to solve the greatest common divisor of 747, 136, 129, 420 i.e 1 in different methods as follows.
Given Input numbers are 747, 136, 129, 420
In the factoring method, we have to find the divisors of all numbers
Divisors of 747 :
The positive integer divisors of 747 that completely divides 747 are.
1, 3, 9, 83, 249, 747
Divisors of 136 :
The positive integer divisors of 136 that completely divides 136 are.
1, 2, 4, 8, 17, 34, 68, 136
Divisors of 129 :
The positive integer divisors of 129 that completely divides 129 are.
1, 3, 43, 129
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
GCD of numbers is the greatest common divisor
So, the GCD (747, 136, 129, 420) = 1.
Given numbers are 747, 136, 129, 420
The list of prime factors of all numbers are
Prime factors of 747 are 3 x 3 x 83
Prime factors of 136 are 2 x 2 x 2 x 17
Prime factors of 129 are 3 x 43
Prime factors of 420 are 2 x 2 x 3 x 5 x 7
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 747, 136, 129, 420
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(747, 136) = 101592
GCD(747, 136) = ( 747 x 136 ) / 101592
= 747 / 136
= 747
Step2:
LCM(1, 129) = 129
GCD(1, 129) = ( 1 x 129 ) / 129
= 1 / 129
= 1
Step3:
LCM(1, 420) = 420
GCD(1, 420) = ( 1 x 420 ) / 420
= 1 / 420
= 1
So, Greatest Common Divisor of 747, 136, 129, 420 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 747, 136, 129, 420
The greatest common divisor of numbers 747, 136, 129, 420 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 747, 136, 129, 420 is 1.
1. What is the GCD of 747, 136, 129, 420?
GCD of given numbers 747, 136, 129, 420 is 1
2. How to calculate the greatest common divisor of 747, 136, 129, 420?
We can find the highest common divisor of 747, 136, 129, 420 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 747, 136, 129, 420 i.e 1.
3. How can I use the GCD of 747, 136, 129, 420Calculator?
Out the numbers 747, 136, 129, 420 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.