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).
Maximum running product for a string of numbers
Find state names that end with the letter A
Number of digits in an integer
Sum of series V
Pi Digit Probability
Permute diagonal and antidiagonal
Pandigital number n°2 (Inspired by Project Euler 32)
Replicate elements in vectors
How many monitors are connected ?
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