The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Farey Sequence in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 466th Lv0Sys 🇵🇱 805 79 11ms 9 days ago 482nd MeWhenI 🇻🇦 804 78 2ms 1 Dec 2023 482nd Yewzir 🇧🇪 804 78 2ms 26 May 2024 484th Shanethegamer 🇺🇸 804 89 41ms 12 Sep 2024 485th SirBogman 🇺🇸 803 234 16ms 4 Dec 2023 486th emgordon154 802 52 37ms 11 Sep 2024 486th sean-niemann 🇺🇸 802 52 55ms 13 Oct 2025 488th Steffan153 🇫🇮 802 63 130ms 5 Aug 2024 489th CaedenHarper 🇨🇦 802 72 10ms 23 Aug 2025 490th MeWhenI 🇻🇦 802 99 3ms 1 Dec 2023 490th albanian-laundromat 802 99 3ms 5 Oct 2025 492nd Kacarott 🇦🇺 798 79 72ms 13 Sep 2024 493rd CaedenHarper 🇨🇦 798 95 453ms 3 Oct 2025 494th Yewzir 🇧🇪 797 81 2ms 26 May 2024 495th pardouin 🇫🇷 797 84 38ms 25 Apr 2025 496th MeWhenI 🇻🇦 796 68 130ms 3 Aug 2024 497th adamnielson42 🇺🇸 795 80 10ms 1 Dec 2023 498th stefangimmillaro 794 101 123ms 30 Apr 2024 499th emgordon154 793 185 1,782ms 22 days ago 500th edsrzf 🇳🇿 791 72 810ms 5 Sep 2025 501st tayloia 🇬🇧 791 73 9ms 3 Dec 2023 502nd albanian-laundromat 791 86 108ms 11 Nov 2025 503rd annaproxy 791 92 128ms 11 Dec 2023 504th edsrzf 🇳🇿 788 80 65ms 28 Jul 2025 505th MeWhenI 🇻🇦 787 53 40ms 1 Dec 2023 505th olleicua 🇺🇸 787 53 57ms 23 Dec 2023 507th emgordon154 787 88 12ms 10 Dec 2024 508th AdrienHache 🇫🇷 786 93 361ms 6 Dec 2023 509th Shanethegamer 🇺🇸 785 69 2ms 1 Dec 2023 510th AlephSquirrel 785 81 11ms 6 Dec 2023 510th doktoren 785 81 10ms 10 Dec 2023 510th brimstonetrader 785 81 10ms 23 Feb 2024 510th NickTheEASDude 🇺🇸 785 81 71ms 25 Apr 2024 510th martion2007 785 81 70ms 15 Aug 2024 510th Herbert00709 🇵🇱 785 81 10ms 27 Nov 2024 510th CLOStrophobic 🇮🇹 785 81 11ms 28 Jan 2025 510th Pyroan 785 81 10ms 18 Mar 2025 510th vhoulbreque 🇫🇷 785 81 70ms 23 days ago 519th targrik 785 123 270ms 30 Jun 2025 520th DialFrost 🇸🇬 785 159 8ms 23 May 2025 521st tailorspy 783 109 76ms 12 Aug 2024 522nd Shanethegamer 🇺🇸 779 64 258ms 25 Sep 2024 523rd ovs-code 🇩🇪 779 89 10ms 12 Dec 2023 524th elgan65536 778 103 123ms 29 Mar 2024 525th Natanaelel 🇸🇪 777 47 38ms 26 Jan 2024 526th namelessiw 777 79 418ms 5 Mar 2024 526th lifthrasiir 🇰🇷 777 79 381ms 2 Dec 2024 528th pardouin 🇫🇷 776 92 10ms 25 Apr 2025 529th MichalMarsalek 🇨🇿 775 82 10ms 1 Dec 2023 529th Koshu 775 82 11ms 2 Dec 2023 529th uttumuttu 🇫🇮 775 82 10ms 22 Dec 2023 532nd drabart 🇵🇱 775 110 75ms 2 Dec 2023 532nd AdrienHache 🇫🇷 775 110 127ms 7 Jan 2024 534th albanian-laundromat 774 146 444ms 13 Oct 2025 535th DialFrost 🇸🇬 772 54 51ms 1 Dec 2023 535th neel11235813 772 54 46ms 1 Dec 2023 535th error256 772 54 35ms 14 Feb 2025 538th Shanethegamer 🇺🇸 769 72 6ms 1 Dec 2023 539th MeWhenI 🇻🇦 768 80 89ms 1 Dec 2023 540th xsot 🇸🇬 768 93 10ms 5 Oct 2024 540th DialFrost 🇸🇬 768 93 10ms 6 Dec 2024 540th MeWhenI 🇻🇦 768 93 10ms 14 Feb 2025 543rd m42km 766 83 10ms 6 Jan 2024 543rd Natanaelel 🇸🇪 766 83 10ms 22 Mar 2024 543rd elgan65536 766 83 11ms 29 Mar 2024 543rd davecame 766 83 14ms 25 Apr 2024 547th MeWhenI 🇻🇦 765 66 6ms 1 Dec 2023 548th MeWhenI 🇻🇦 763 71 2ms 1 Dec 2023 549th MeWhenI 🇻🇦 763 105 122ms 14 Feb 2025 550th Shanethegamer 🇺🇸 761 73 965ms 1 Dec 2023 551st pardouin 🇫🇷 761 91 9ms 26 Apr 2025 552nd CaedenHarper 🇨🇦 759 75 753ms 27 Sep 2025 553rd Yewzir 🇧🇪 759 83 38ms 26 May 2024 554th KatieLG 🇬🇧 758 55 37ms 2 Jan 2024 554th TFeld00 🇩🇰 758 55 46ms 3 Sep 2024 556th AlephSquirrel 758 81 418ms 16 Jan 2024 557th jared-hughes 757 84 11ms 17 Dec 2023 557th stertooy 🇧🇪 757 84 10ms 14 Jun 2024 557th sacredeux 757 84 11ms 20 Aug 2024 557th hiichbindermax 757 84 11ms 27 May 2025 First Prev 481–560 of 1,484 Next Last