135683

This number is a composite.

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+ The only 6-digit brilliant number whose prime factorization contains the first six positive digits, (1 to 6), and the factorization of its reversal contains also six consecutive digits, (3 to 8), i.e., 135683 = 241 * 563 and 386531 = 83 * 4657. [Loungrides]

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