The Calendar hole will go live in approximately 2 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 558th hiichbindermax 757 84 11ms 27 May 2025 562nd NickTheEASDude 🇺🇸 756 87 2ms 25 Apr 2024 563rd MateuszPietrzak 🇵🇱 755 113 72ms 2 Dec 2023 564th weliveinhell 🇭🇹 750 77 10ms 2 Dec 2023 564th Maznek 750 77 9ms 9 Dec 2023 564th niklv 🇷🇺 750 77 9ms 27 Dec 2023 564th targrik 750 77 10ms 16 Sep 2025 564th madeforlosers 750 77 9ms 20 Oct 2025 569th KrausRaus 🇺🇸 748 85 10ms 1 Dec 2023 570th albanian-laundromat 748 127 34ms 26 days ago 571st annaproxy 746 98 365ms 12 Dec 2023 572nd Shanethegamer 🇺🇸 745 93 14ms 19 Dec 2023 573rd MeWhenI 🇻🇦 742 31 50ms 1 Dec 2023 574th snyderek 🇺🇸 742 115 62ms 18 Dec 2024 575th Yewzir 🇧🇪 741 98 10ms 9 Jan 2025 576th albanian-laundromat 740 77 810ms 24 Sep 2025 577th voytxt 🇨🇿 740 78 10ms 1 Dec 2023 577th dmrichwa 🇺🇸 740 78 10ms 2 Dec 2023 577th dylanarmstrong 740 78 10ms 9 Dec 2023 577th Irratix 🇳🇱 740 78 10ms 29 Apr 2024 577th Yax42 🇫🇷 740 78 9ms 13 Nov 2025 582nd m42km 740 83 413ms 1 Feb 2024 582nd snoozingnewt 🇨🇦 740 83 94ms 30 Nov 2025 584th dokutan 737 94 14ms 5 May 2024 584th DialFrost 🇸🇬 737 94 9ms 15 Dec 2024 586th AdrienHache 🇫🇷 733 88 4ms 7 Jan 2024 587th frankgraziano 732 69 7ms 26 Feb 2025 588th SirBogman 🇺🇸 731 57 41ms 4 Dec 2023 588th edsrzf 🇳🇿 731 57 38ms 6 Mar 2025 590th KrausRaus 🇺🇸 731 79 10ms 1 Dec 2023 590th jared-hughes 731 79 10ms 17 Dec 2023 590th uttumuttu 🇫🇮 731 79 10ms 21 Dec 2023 593rd weliveinhell 🇭🇹 726 133 251ms 2 Dec 2023 594th Herbert00709 🇵🇱 723 118 68ms 27 Nov 2024 595th jacekwladzinski 722 88 10ms 3 Oct 2025 596th FlyingPenguin223 721 87 2ms 4 Dec 2023 597th DialFrost 🇸🇬 719 101 11ms 12 Dec 2024 598th Vinterion 717 90 2ms 19 Jul 2024 599th tomtheisen 🇺🇸 717 102 390ms 10 Apr 2025 600th genmeblog 714 97 11ms 11 Dec 2023 601st cyrilboyer 🇫🇷 713 81 10ms 21 Dec 2023 602nd MeWhenI 🇻🇦 712 70 237ms 1 Dec 2023 603rd annaproxy 711 91 14ms 4 Dec 2023 604th luuumine 🇫🇷 711 120 50ms 19 Nov 2025 605th Yax42 🇫🇷 710 103 381ms 13 Nov 2025 606th drabart 🇵🇱 709 91 2ms 7 Dec 2023 607th adamnielson42 🇺🇸 707 64 7ms 1 Dec 2023 608th SirBogman 🇺🇸 706 41 2ms 1 Dec 2023 609th commandblockguy 🇺🇸 706 90 11ms 1 Dec 2023 609th ZakkkkAttackkkk 🇵🇭 706 90 11ms 9 May 2024 609th Bmrl7 706 90 12ms 4 days ago 612th Yewzir 🇧🇪 704 137 265ms 5 Jan 2024 613th DialFrost 🇸🇬 702 60 245ms 16 Jul 2024 614th weliveinhell 🇭🇹 701 92 2ms 2 Dec 2023 615th agreegious 699 91 10ms 17 Nov 2024 616th MeWhenI 🇻🇦 698 101 17ms 1 Dec 2023 617th saito-ta 🇯🇵 697 141 2,676ms 14 Dec 2023 618th albanian-laundromat 696 270 14ms 21 days ago 619th TheZwierzLF 🇵🇱 695 60 36ms 44 hours ago 620th Shanethegamer 🇺🇸 693 91 75ms 13 Dec 2024 621st MeWhenI 🇻🇦 692 108 4ms 1 Dec 2023 622nd Babafaba 691 92 10ms 22 Oct 2025 623rd msbranicky 689 140 262ms 1 Jan 2024 624th HumanoidCPU 688 124 63ms 5 Mar 2024 625th Yewzir 🇧🇪 686 79 2ms 26 May 2024 626th Yewzir 🇧🇪 686 83 722ms 5 Feb 2025 627th MateuszPietrzak 🇵🇱 686 94 2ms 7 Dec 2023 628th HumanoidCPU 685 96 2ms 16 Nov 2025 629th dokutan 685 106 11ms 30 Nov 2025 630th ahmetdemirag 🇨🇾 684 93 11ms 9 Jun 2024 630th keelimeguy 🇺🇸 684 93 10ms 14 Jun 2025 632nd cyrilboyer 🇫🇷 684 141 267ms 14 Dec 2023 633rd anter69 🇭🇺 683 61 39ms 13 Feb 2024 633rd tatzyr 🇯🇵 683 61 40ms 29 Dec 2024 635th Shanethegamer 🇺🇸 683 90 93ms 1 Dec 2023 636th SirFireball3521 682 64 150ms 13 Sep 2024 637th commandblockguy 🇺🇸 682 90 415ms 15 Jan 2024 638th JohandeRuiter 🇳🇱 679 95 2ms 22 Jan 2025 639th cyrilboyer 🇫🇷 679 118 122ms 19 Dec 2023 640th albanian-laundromat 678 93 40ms 7 Sep 2025 First Prev 561–640 of 1,485 Next Last