Ninety-three
From Wikipedia, the free encyclopedia.

Ninety-three (93, XCIII) is the natural number following ninety-two and preceding ninety-four. It is a composite number, with its divisors being 3 and 31, and its factorization is

Given 93, the Mertens function returns 0.

93 is also:

• The atomic number of neptunium, an actinide.
• The designation of American Interstate 93, a freeway that runs from Massachusetts to Vermont.
• The code for international direct dial phone calls to Afghanistan.
• The number of United Flight 93, which crashed in Pennsylvania, USA on September 11, 2001.

This article is about the number. For the year AD 93, see 93.

The original article can be found at: http://en.wikipedia.org/wiki/Ninety-three.
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