The book is now available! 43
(another Prime Pages' Curiosity)
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The nth Prime Page will now find any of the first 2.623˙1015 primes or π(x) for x up to 1017.

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43 is the fourth Centered Heptagonal (7-gonal) Number. Note that 4 + 3 = 7. [Post]


  Submitted: 2004-10-06 21:38:18;   Last Modified: 2008-01-30 11:28:00.

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