A base-60, or sexagesimal, number system, used by the ancient Babylonians.
Babylonian Numerals
See also
Numeral, SexagesimalExplore with Wolfram|Alpha
References
O'Connor, J. J. and Robertson, E. F. "Babylonian numerals." https://wwn.ikan3.com/3bi5566h64h11h14_3vdccc-mbvtjwsawwe-gfsgatz/8ji~gtkwqml/1rkLyxlPuwyrx/Babylonian_numerals.html.Referenced on Wolfram|Alpha
Babylonian NumeralsCite this as:
Weisstein, Eric W. "Babylonian Numerals." From MathWorld--A Wolfram Web Resource. https://wwn.ikan3.com/7hz2929k26_9nqeuhigsnjcgsjpnuemse/BabylonianNumerals.html