Project Euler problem 961 (source code)

= Project Euler problem 961
{c}
{title2=September 2025}

https://projecteuler.net/problem=961

Numerical solution:
``
166666666689036288
``

Earliest known public leak: https://github.com/lucky-bai/projecteuler-solutions/pull/94

Programs:
* https://github.com/cirosantilli/project-euler-solvers/blob/master/solvers/961.py