Regular number
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Regular numbers are numbers that evenly divide powers of 60. Equivalently, they are the numbers whose only prime divisors are 2, 3, and 5. As an example, 602 = 3600 = 48 × 75, so as divisors of a powe
AO 6456, a table of reciprocals of regular numbers from Seleucid Uruk, copied from an unknown earlier source
Babylonian mathematics
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Babylonian mathematics is the mathematics developed or practiced by the people of Mesopotamia, as attested by sources surviving mainly from the Old Babylonian period to the Seleucid period from the la
Babylonian clay tablet YBC 7289 with annotations. The diagonal displays an approximation of the square root of 2 in four sexagesimal figures, 1 24 51 10, which is good to about six decimal digits. 1 + 24/60 + 51/602 + 10/603 = 1.41421296... The tablet also gives an example where one side of the square is 30, and the resulting diagonal is 42 25 35 or 42.4263888...
Clay tablet, mathematical, geometric-algebraic, similar to the Pythagorean theorem. From Tell al-Dhabba'i, Iraq. 2003–1595 BC. Iraq Museum
Clay tablet, mathematical, geometric-algebraic, similar to the Euclidean geometry. From Tell Harmal, Iraq. 2003–1595 BC. Iraq Museum