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.
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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).
Make a Palindrome Number
Remove the polynomials that have positive real elements of their roots.
Symmetry of vector
Sum of the Matrix Elements
Longest Collatz Sequence
Getting the indices from a matrix
Without the French accent please!
Expression or variable?
Pandigital number n°2 (Inspired by Project Euler 32)
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