Online GCD Calculator is useful to find the GCD of 690, 245, 53, 178 quickly. Get the easiest ways to solve the greatest common divisor of 690, 245, 53, 178 i.e 1 in different methods as follows.
Given Input numbers are 690, 245, 53, 178
In the factoring method, we have to find the divisors of all numbers
Divisors of 690 :
The positive integer divisors of 690 that completely divides 690 are.
1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
Divisors of 245 :
The positive integer divisors of 245 that completely divides 245 are.
1, 5, 7, 35, 49, 245
Divisors of 53 :
The positive integer divisors of 53 that completely divides 53 are.
1, 53
Divisors of 178 :
The positive integer divisors of 178 that completely divides 178 are.
1, 2, 89, 178
GCD of numbers is the greatest common divisor
So, the GCD (690, 245, 53, 178) = 1.
Given numbers are 690, 245, 53, 178
The list of prime factors of all numbers are
Prime factors of 690 are 2 x 3 x 5 x 23
Prime factors of 245 are 5 x 7 x 7
Prime factors of 53 are 53
Prime factors of 178 are 2 x 89
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 690, 245, 53, 178
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(690, 245) = 33810
GCD(690, 245) = ( 690 x 245 ) / 33810
= 690 / 245
= 690
Step2:
LCM(5, 53) = 265
GCD(5, 53) = ( 5 x 53 ) / 265
= 5 / 53
= 5
Step3:
LCM(1, 178) = 178
GCD(1, 178) = ( 1 x 178 ) / 178
= 1 / 178
= 1
So, Greatest Common Divisor of 690, 245, 53, 178 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 690, 245, 53, 178
The greatest common divisor of numbers 690, 245, 53, 178 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 690, 245, 53, 178 is 1.
1. What is the GCD of 690, 245, 53, 178?
GCD of given numbers 690, 245, 53, 178 is 1
2. How to calculate the greatest common divisor of 690, 245, 53, 178?
We can find the highest common divisor of 690, 245, 53, 178 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 690, 245, 53, 178 i.e 1.
3. How can I use the GCD of 690, 245, 53, 178Calculator?
Out the numbers 690, 245, 53, 178 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.