My favourite example of galactic algorithms is the most efficient way to multiply two numbers. As the Wikipedia page[1] states: An example of a galactic algo

My favourite example of galactic algorithms is the most efficient way to multiply two numbers. As the Wikipedia page[1] states: An example of a galactic algorithm is the fastest known way to multiply two numbers,[2] which is based on a 1729-dimensional Fourier transform. This means it will not reach its stated efficiency until the numbers have at least 21729 digits [1] https://en.wikipedia.org/wiki/Galactic_algorithm https://en.wikipedia.org/wiki/Galactic_algorithm