As the history told, the sumerians might have been invented their writing during 4th to 2nd millennia BC. Their number systems was a base 60 or sexagesimal system.
The sumerian number system consists only two numerals, the one and ten. Their place value system is read from the right, increased by a factor of 60.
10 + 1 + 11 + 1 + 110
12 x 6023 x 60110 x 600 12 x 3600 + 3 x 60 + 10 43200 + 180 + 10 = 43390
The main drawback of the sumerian number system is the way to represent zero is not mentioned.
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