Ciro Santilli @cirosantilli 37

Numerical solution:

Earliest known public leak: github.com/lucky-bai/projecteuler-solutions/commit/f7d538c7fa68d4a502da6705fd7ec3afc89e0cf9#diff-37cf8442cb9ce8d4c7401df424ea9362634a8a8733caa930c07346ea624be24fR961

Programs: TODO!

matharena.ai/euler/ mentions that MathArena guys managed to solve it with GPT-5 and an agent.

Numerical solution:

Earliest known public leak: github.com/lucky-bai/projecteuler-solutions/pull/97

Programs:

I have been banned from Project Euler for life, and cannot login to my previous account projecteuler.net/profile/cirosantilli.pn

The ban happened within 12 hours of me publishing a solution to Project Euler problem 961 github.com/lucky-bai/projecteuler-solutions/pull/94 which was one-shot by a free GPT-5 account as MathArena had alerted me to being possible: matharena.ai/?comp=euler--euler&task=4&model=GPT-5+%28high%29&run=1

The problem leaderboard contains several people solved the problem within minutes of it being released, so almost certainly with an LLM.

I'm a huge believer in giving answers to problems, and I take the ban with pride.

It is funny to see that people waste their time policing this kind of useless stuff.

Project Euler likely has many fun problems, and can be a useful machine learning benchmark.

The "secret club" mentality is their only blemish, and incompatible with open science.

They should also make sure that LLMs don't one shot their future problems BEFORE publishing them!

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