Project Euler problem 973 (source code)

= Project Euler problem 973
{c}
{title2=December 2025}

https://projecteuler.net/problem=973

Notes:
* https://matharena.ai/?comp=euler--euler from <MathArena> claims <Gemini 3> solved it
* https://x.com/roanoke_gal/status/1997322744594125081 claims <GPT-5.1 Pro> solved it.