47

This number is a prime.

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47 is self-conscious: 4 + 7 = 11, 7 + 11 = 18, 11 + 18 = 29, and 18 + 29 = 47. It refers to itself. Note that 4, 7 and 47 are Lucas numbers. [Faust]

Submitted: 1999-09-02 18:40:00;   Last Modified: 2008-01-30 11:28:00.
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