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

    TralfamadorianComedian

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    ⛳

    11 / 123 Holes

    🔣

    1 / 62 Langs

    🏆

    7 / 99 Cheevos

    📅

    Collatz
    835
    Divisors
    984
    Emirp Numbers
    538
    Fibonacci
    935
    Fizz Buzz
    678
    Happy Numbers
    486
    Niven Numbers
    619
    Odious Numbers
    552
    Pernicious Numbers
    349
    Prime Numbers
    872
    Recamán
    563