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3 is the only Integer which is the sum of the preceding Positive Integers () and the
only number which is the sum of the Factorials of the preceding Positive
Integers (
). It is also the first Odd Prime. A quantity taken to the Power
3 is said to be Cubed.
See also 1, 2, 3x+1 Mapping, Cubed, Period Three Theorem, Super-3 Number, Ternary, Three-Colorable, Zero