The book is now available! 3119
(another Prime Pages' Curiosity)
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+ The number of days between the previous terrorist attack on the Twin Towers and 9/11. Note the appearance of 911 in the reversal of 3119.

+ The smallest prime factor of the 43-digit number of terms required to obtain a sum of 100 in the harmonic series.

(There are 2 curios for this number that have not yet been approved by an editor.)




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