The Ishango Bone reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Ishango Bone

The Ishango bone is a tally stick, made of bone, which contains sequences of prime numbers, and some series of multiples. Originally from Africa, this artifact now resides at the Musee d'Histoire Naturelle Brussels, Belgium. The bone is dated about 6500 BCE.

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