test case #2 is not correct.
The problem description should be change to "and the sum of non-prime numbers up to the greatest prime lower than x".
Project Euler: Problem 5, Smallest multiple
03 - Matrix Variables 6
Generate the sum of Squares of the given number
Create tangent function out of cosine only
Converting binary to decimals
Ratio between sum of primes and sum of factors
Alternating 1´s and 0´s in a matrix
Get the mean digit
Double the next!
Sum of a geometric series
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