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    What unusual mathematical property does 1701 have?

    Question #97428. Asked by tragic_flawed. (Jul 11 08 1:57 AM)


    gentlegiant17

    		1701 is an odd number and a Stirling number of the second kind.

    The number 1701 also has unusual properties as it:

    belongs to a set of numbers such that n2 contains exactly seven different digits

    is a decagonal and a 13-gonal number

    is divisible by the square of the sum of its digits

    belongs to a set of numbers with only palindromic prime factors whose sum is palindromic

    is a First Beale cipher

    belongs to a set of numbers whose digits of prime factors of are either 3 or 7

    and its palindrome are divisible by 7

    http://en.wikipedia.org/wiki/1701_%28number%29

    [Full text added from provided link -- Zb]

    Jul 11 08, 2:30 AM

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