This number is a prime.
Single Curio View: (Seek other curios for this number)If t(n) represents the nth triangular number, then 31 is the smallest prime of the form t(p) + t(q), where p and q are themselves prime. [Rupinski]
Submitted: 2003-01-02 12:13:26; Last Modified: 2008-01-30 11:28:00.
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