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18 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) 18 is the only two-digit number m , such that three numbers, m + prime(m), m^2 + prime(m^2) & m^3 + prime(m^3), are primes. [Firoozbakht]
Submitted: 2004-07-22 01:01:41; Last Modified: 2008-01-30 11:28:00.
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