Developer Solves 60-Year-Old Erdős Problem Using ChatGPT 5.4 Pro

A 23-year-old developer solved one of Erdős’s problems that had remained unsolved for 60 years, using ChatGPT 5.4 Pro.

And on the first try.

Time spent by ChatGPT: 1 hour 20 minutes.

An interesting point: the model solved the problem using a formula everyone knows, but no one had applied to this problem.

Here’s the dialogue with ChatGPT: https://chatgpt.com/share/69dd1c83-b164-8385-bf2e-8533e9baba9c
And here is the problem itself: