This number is a composite.

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The sum of the squares of the first 41 semiprimes is itself a 4-brilliant number (this being the first such solution). Note that 41 is the prime reversal of the semiprime 14, that 4-brilliant means the product of 4*1 primes of the same number of digits, and that 41 is one of those primes. [Post]

Submitted: 2004-10-25 18:49:43;   Last Modified: 2008-01-30 11:28:00.
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