NullPrime – do AI models know when they can't know?
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Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Summary
Brian Miedlar's NullPrime is a benchmark of integers filtered so that divisibility by small primes, the one learnable cue to primality, is removed, leaving a balanced prime/composite task that standard learners answer at chance.