The book is now available! 163
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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163 is the least number k such that decimal representation of 1/k has period of length 81. It is one of a few exceptions to the rule that k=3^(n+2) is the least number with 1/k having period 3^n. [Noe]


  Submitted: 2010-04-14 17:52:35;   Last Modified: 2010-04-19 20:25:17.

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