Each integer is represented as a vector of its prime factors, in a
high-dimensionality representation such that:
[1 0 1 0 0 0 0 ...] means that the number has factors 2 and 5 (first
and third primes). Then they apply a dimensionality reduction
algorithm to transform these vectors into 2D vectors with real-valued
coordinates.
I think the result is beautiful:
https://johnhw.github.io/umap_primes/index.md.html
Cheers,
Telmo.
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