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23 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) 23 is the only prime of the form p*q + p + q and p*q - p - q, where p and q are two successive primes (3*5 + 3 + 5 = 5*7 - 5 - 7 = 23. [Teofilatto]
Submitted: 2004-07-03 21:17:53; Last Modified: 2008-01-30 11:28:00.
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