Depending on the country, the number ten thousand is usually written as 10,000 (including in the UK and US), 10.000, or 10 000. [4] In scientific notation it is written as 104 or 1 E+4 (equivalently 1 E4) in E notation. It is the square of 100 and the square root of 100,000,000. The value of a myriad to the power of itself, 10000 10000 = 10 40000. More @Wikipedia
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