+`3e3` denotes `3 × 10^3`, representing the number `3000`. It is an example of [Scientific Notation](/wiki/Scientific_Notation), a concise way to express very large or very small numbers using an [Exponent](/wiki/Exponent) to indicate powers of ten.
+## See also
+- [Power of Ten](/wiki/Power_of_Ten)
+- [Base 10](/wiki/Base_10)
+- [Order of Magnitude](/wiki/Order_of_Magnitude)
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