ISHANGO BONE - THE WORLD'S FIRST MATHEMATICAL SIEVE FOR THE PRIME NUMBERS

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How come nobody has noticed? The markings on the Ishango bone perfectly model a sieve for the prime numbers. It is observed (for n greater than 3) that the middle column M of the bone eliminates from the sequence n = 1,2,3,4,5,6,7,8,9,10, numbers composed of "copies" of others, leaving behind prime numbers only. See the complete paper: https://osf.io/preprints/africarxiv/6z2yr/
[☆N.B. A "sieve" in mathematics is an algorithm or process for picking out prime numbers from the procession of natural numbers].