Remember the fun with we had calculating 4784969 fibonacci? There's an interesting article in the Comm.ACM this month about the maybe-final improvement in huge number multiplication; https://cacm.acm.org/magazines/2020/1/241707-multiplication-hits-the-speed-limit/fulltext

tim
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tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Strange OpCodes: RIW: Re-Invent Wheel