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When will the Riemann hypothesis be solved?

Aired 7 August 2026 · written 10 July, when Before 2035 was 18%

When will the Riemann hypothesis be solved? — episode poster
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The market we based this episode on

The board on 10 July 2026, the day the script was written. A price is the market’s odds of that outcome.

Before 203518%
Before 203214%
Before 20309%
Before 20282%
Platform
Kalshi · real money
Resolves
1 January 2035
Volume traded
$138,389
Outcomes on the board
4
Resolution criteria. If the Clay Mathematics Institute officially announces the award of a Millennium Prize for the Riemann hypothesis before Jan 1, 20 [outcome] , then the market resolves to Yes.

Why we chose it

This bet is essentially a proxy wager on whether AI will crack one of math's holy grails within a decade. The Riemann Hypothesis — Bernhard Riemann's 1859 conjecture that all non-trivial zeros of the zeta function have real part 1/2 — is a Clay Millennium Problem with a $1M bounty and has been unproven for 165+ years despite being a central focus of research in number theory.

Numerical verification is absurd (first 100+ billion zeros checked), but no numerical evidence, however vast, constitutes a proof. The market exists because 2024–25 hype around AI-assisted mathematics (Terence Tao publicly using GPT/Lean, DeepMind's AlphaProof medaling at the IMO) has made "machines solve Millennium Problem" feel less absurd — AI-assisted reasoning and formal verification has prompted genuine discussion about contributing to a proof, and Lean 4's Mathlib now contains a machine-checked proof of the Prime Number Theorem, RH's baby cousin.

Bull case: an AI-human hybrid breakthrough via the Langlands program or Connes' operator-theoretic angle (he just published a Feb 2026 "Letter to Riemann" survey). Bear case: crackpot preprints claiming proofs appear monthly and always collapse — the 19%-by-2035 line is basically the market saying "probably not, but AI makes us nervous." Comedic angle: the 2% "before 2028" is pure ChatGPT-solves-math cope.

The show’s read Before making an episode we research the market to judge whether it is worth one. This is what that research said about this bet — our reasoning, not reporting.

What we thought

SalThe Handicapper
EddieThe Philosopher
Sal
The line moved because of AI. Terence Tao started working with chatbots and suddenly a puzzle from 1859 gets a coin flip in six years.
Eddie
For a hundred and sixty-seven years this was a mathematician and the primes. Now there's a third party at the table, and nobody knows if the proof will be ChatGPT's.

How it’s moved since

Daily price. The dotted line is the day the episode was written — the odds Sal and Eddie were looking at. The solid line is the day it aired.

0% 10% 20% 30% 40% 50% 60% written 10 Jul aired 7 Aug 24 Jun 13 Aug 27 Sep Before 2035 46% Before 2032 42% Before 2030 30% Before 2028 2%
Written 10 Jul Aired 7 Aug Source: KALSHI

Biggest move since: Before 2035, up from 18% on the day the episode was written to 46% today.