233

This number is a prime.

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233 is the sum of the squares of first four semiprimes. Note that its reversal is the sum of the squares of three consecutive even semiprimes: 332 = 6^2 + 10^2 + 14^2. [Silva]

Submitted: 2009-11-20 02:06:58; Last Modified: 2009-11-21 00:29:45.