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208403 (another Prime Pages' Curiosity) |
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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]
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