Online GCD Calculator is useful to find the GCD of 398, 145, 628, 785 quickly. Get the easiest ways to solve the greatest common divisor of 398, 145, 628, 785 i.e 1 in different methods as follows.
Given Input numbers are 398, 145, 628, 785
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 145 :
The positive integer divisors of 145 that completely divides 145 are.
1, 5, 29, 145
Divisors of 628 :
The positive integer divisors of 628 that completely divides 628 are.
1, 2, 4, 157, 314, 628
Divisors of 785 :
The positive integer divisors of 785 that completely divides 785 are.
1, 5, 157, 785
GCD of numbers is the greatest common divisor
So, the GCD (398, 145, 628, 785) = 1.
Given numbers are 398, 145, 628, 785
The list of prime factors of all numbers are
Prime factors of 398 are 2 x 199
Prime factors of 145 are 5 x 29
Prime factors of 628 are 2 x 2 x 157
Prime factors of 785 are 5 x 157
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 398, 145, 628, 785
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(398, 145) = 57710
GCD(398, 145) = ( 398 x 145 ) / 57710
= 398 / 145
= 398
Step2:
LCM(1, 628) = 628
GCD(1, 628) = ( 1 x 628 ) / 628
= 1 / 628
= 1
Step3:
LCM(1, 785) = 785
GCD(1, 785) = ( 1 x 785 ) / 785
= 1 / 785
= 1
So, Greatest Common Divisor of 398, 145, 628, 785 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 398, 145, 628, 785
The greatest common divisor of numbers 398, 145, 628, 785 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 398, 145, 628, 785 is 1.
1. What is the GCD of 398, 145, 628, 785?
GCD of given numbers 398, 145, 628, 785 is 1
2. How to calculate the greatest common divisor of 398, 145, 628, 785?
We can find the highest common divisor of 398, 145, 628, 785 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, 145, 628, 785 i.e 1.
3. How can I use the GCD of 398, 145, 628, 785Calculator?
Out the numbers 398, 145, 628, 785 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.