1

This number is a unit (so is neither prime nor composite).

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Unlike the original proof of the Prime Number Theorem from 1896 by Hadamard and Poussin, Erdös and Selberg's proof in 1949 did not employ the square root of -1.

Submitted: 1999-09-02 23:40:00; Last Modified: 2008-01-30 17:28:00.