> or posting arXiv does not count
The Poincaré conjecture guy also broke that rule. They wanted to give him the prize anyway but he refused. OpenAI announced they would also not claim the prize.
Looks like no one wants this prize lol
You might be right. At this rate, if AI solves the remaining five problems, we're heading towards a hilarious situation where all the Millennium Problems are solved, but nobody wants to claim the prize money.
Perelman posted to arXiv in 2002/3.
The prize was offered to him in 2010, after multiple others had digested his work and published elsewhere.