+13e3 is a numerical shorthand representing the value 13,000. It is an example of [Scientific Notation](/wiki/Scientific_Notation), a standard way to express very large or very small numbers concisely. This form simplifies calculations and is widely used across [Science](/wiki/Science) and engineering.
+## See also
+- [Number](/wiki/Number)
+- [Exponent](/wiki/Exponent)
+- [Decimal System](/wiki/Decimal_System)
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