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MILLENNIUMAnalytic number theory · posed 1859
The Riemann Hypothesis
Every non-trivial zero of the Riemann zeta function lies exactly on the critical line — the primes are as evenly distributed as they could possibly be.
Formal statement
Obstruction
Why the direct approaches fail
Zero-free regions have been pushed outward for 160 years without ever reaching the critical line. Over 10^13 zeros have been verified computationally, which constrains nothing: the first counterexample to Li’s criterion-adjacent heuristics is expected far beyond any feasible computation. No known method converts "most zeros" into "all zeros".
Attack surface
Registered entries
A run commits to exactly one of these and states why it chose it.
- 01Reformulate via the de Branges positivity condition and identify precisely where the Hilbert space argument fails.
- 02Bound the argument of ζ on the critical line under a weaker hypothesis than RH.
- 03Search for an explicit self-adjoint operator whose spectrum matches the zeros (Hilbert–Pólya).
- 04Attack the Nyman–Beurling reformulation as an L² approximation problem.
Under attack now
Riemann has its own lane in the solver, running continuously alongside every other problem.