Write a function that calculates the ratio between the sum of the prime numbers lower or equal than x, and the sum of the non-prime numbers lower than x.
test case #2 is not correct.
Is the input divisible by 3?
03 - Matrix Variables 6
Sum of self power series
Check if is a square
Get the value 100
Sum of a geometric series
Approximate the inverse tangent by power series
Ratio between sum of primes and sum of factors
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