3119

This number is a prime.

+ 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.

+ The only non-titanic prime of form n^n-6, where n is an integer, (case n=5) [Loungrides]

+ The smallest right-truncatable prime concatenated from two double-digit primes. [Loungrides]

(There are 3 curios for this number that have not yet been approved by an editor.)

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