1. The question asks about the hardest math problem. 2. "Hardest math problem" is subjective and depends on context, but one of the most famous and difficult problems is the Riemann Hypothesis. 3. The Riemann Hypothesis concerns the zeros of the Riemann zeta function $$\zeta(s) = \sum_{n=1}^\infty \frac{1}{n^s}$$ for complex numbers $s$. 4. It states that all non-trivial zeros of $$\zeta(s)$$ have real part $$\frac{1}{2}$$. 5. This problem is unsolved and is one of the seven Millennium Prize Problems with a million-dollar prize for a correct proof. 6. Because it is unsolved, it remains one of the hardest problems in mathematics.