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

    kellantech

    17,967
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    17,005
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    ⛳

    29 / 123 Holes

    🔣

    6 / 62 Langs

    🏆

    13 / 98 Cheevos

    📅

    12 Days of Christmas
    426
    99 Bottles of Beer
    396
    Abundant Numbers
    701 776517 662
    Arithmetic Numbers
    220 691791
    brainfuck
    703
    Catalan Numbers
    577603
    Collatz
    774891864541 818
    CSS Colors
    188
    Divisors
    760
    Emirp Numbers
    753
    Emojify
    303
    Evil Numbers
    816
    Evil Numbers (Long)
    872
    Fibonacci
    793 873 717947
    Fizz Buzz
    497 523
    Foo Fizz Buzz Bar
    509
    Fractions
    510
    Happy Numbers
    775
    Leap Years
    794 827
    Morse Encoder
    245
    Niven Numbers
    891 919 955957
    Odious Numbers
    870
    Pangram Grep
    673
    Pascal’s Triangle
    462
    Pernicious Numbers
    833
    Prime Numbers
    275 930
    Rijndael S-box
    163
    Rule 110
    407
    Van Eck Sequence
    487