Be careful, I've implemented the sieve, but not all versions of it are sufficiently fast to handle the biggest numbers in the test suite.
This doesn't use primes(x),but still feels a little like cheating.
The whole point of using the sieve is not knowing which numbers are prime. So it is no different than sum(primes).
Is the Point in a Triangle?
Insert zeros into vector
Count consecutive 0's in between values of 1
Create a two dimensional zero matrix
Numbers spiral diagonals (Part 1)
Find the path through the cell
BLOCK x3 (Version 1)
Pandigital number n°3 (Inspired by Project Euler 32)
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