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    The Calendar hole will go live in approximately . Why not try and solve it ahead of time?

    beergit

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    9 / 123 Holes

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    1 / 62 Langs

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    4 / 99 Cheevos

    📅

    Catalan Numbers
    63rd
    Collatz
    65th
    Emirp Numbers (Long)
    43rd
    Factorial Factorisation
    31st
    Foo Fizz Buzz Bar
    57th
    Happy Numbers (Long)
    53rd
    Niven Numbers (Long)
    57th
    Odious Numbers (Long)
    51st
    Pernicious Numbers (Long)
    44th