Nice test cases!
With a more robust Test Suite many/most of the submissions would fail for ignoring the Problem Statement instruction that primes must be less than n. Please add test cases in which the input x (or "n") is itself a prime.
597 Solvers
309 Solvers
Determine Whether an array is empty
650 Solvers
251 Solvers
Element by element multiplication of two vectors
272 Solvers
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