+163 is a natural number, an [integer](/wiki/Integer) that falls between 162 and 164. It holds significance as a [prime number](/wiki/Prime_Number) and the largest of the Heegner numbers.
+## See also
+- [Natural Number](/wiki/Natural_Number)
+- [Prime Number](/wiki/Prime_Number)
+- [Heegner Number](/wiki/Heegner_Number)
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