Primorial

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(C)Copyright 2022, C. Burke. "AnthroNumerics" is a trademark of Christopher J. Burke and (x, why?).

Soup's on!

Primorial numbers are something new for me. Similar to factorial, and represented with # instead of !, a primorial number, n#, is the product of all the primes less than or equal to n, with 0# = 1# = 1.

They have their uses in math higher than I tend to cover on this page.

I'd rank it a little double the double factorial, !!, which I encountered a decade ago in an article about probability and Texas Hold-em. In that game, each player has 2 hole cards, and their order doesn't matter. This is also likely the first time in nearly a decade that I've thought about Texas Hold'em. The fad kinda passed for me.

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