+539 is a [natural number](/wiki/Natural_Number) that comes after 538 and before 540. It is a [composite number](/wiki/Composite_Number), whose prime factors are 7 and 11 (7² × 11). This number also denotes a year in the [Common Era](/wiki/Common_Era).
+## See also
+- [Integer](/wiki/Integer)
+- [Factor](/wiki/Factor)
+- [Prime Factorization](/wiki/Prime_Factorization)
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