You reminded me of https://en.wikipedia.org/wiki/Gödel_numbering https://en.wikipedia.org/wiki/Gödel_numbering > Each letter of the message is represented in o

You reminded me of https://en.wikipedia.org/wiki/Gödel_numbering https://en.wikipedia.org/wiki/Gödel_numbering > Each letter of the message is represented in order by the natural order of prime numbers—that is, the first letter is represented by the base 2, the second by the base 3, the third by the base 5, then by 7, 11, 13, 17, etc. The identity of the letter occupying that position in the message is given by the exponent, simply: the exponent 1 meaning that the letter in that position is an A, the exponent 2 meaning that it is a B, 3 a C, 4 a D, up to 26 as the exponent for a Z. The message as a whole is then rendered as the product of all the bases and exponents. Examples. The word 'cab' can thus be represented as 2^3 x 3^1 x 5^2, or 600. Excerpt From: Frederik Pohl. “Starburst.”