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 881st madeforlosers 479 113 2ms 8 Dec 2023 882nd solisolu 478 133 11ms 12 days ago 883rd dokutan 478 140 40ms 29 Oct 2024 884th snoozingnewt 🇨🇦 475 167 3ms 15 Oct 2025 885th MaxCastella 🇫🇷 473 89 780ms 1 Dec 2023 886th dokutan 473 149 19ms 18 days ago 887th snoozingnewt 🇨🇦 473 184 5ms 15 Oct 2025 888th CatsAreFluffy 472 130 502ms 31 Jan 2024 889th RockOfStone 471 140 4ms 23 Mar 2024 890th msbranicky 469 118 4ms 2 Jan 2024 890th dokutan 469 118 4ms 10 Apr 2025 892nd trinityy-7 469 123 22ms 6 Dec 2023 893rd Mabeloid 🇳🇴 469 131 473ms 17 Sep 2024 894th Feniske 🇫🇷 468 90 293ms 1 Dec 2023 895th emgordon154 467 62 3ms 1 Oct 2025 896th dokutan 467 135 1,299ms 31 Mar 2025 897th dokutan 466 126 110ms 26 Oct 2024 898th HumanoidCPU 466 132 95ms 5 Jun 2024 899th msbranicky 465 144 40ms 2 Jan 2024 900th f-tucker 464 137 32ms 24 May 2024 900th Jaydosu 464 137 12ms 26 Jun 2024 900th mbittner20 464 137 20ms 13 Apr 2025 900th Andrey2001 464 137 19ms 14 days ago 904th AsbestosSniffer 464 184 1,167ms 1 Dec 2023 905th cmkb3 463 91 263ms 1 Dec 2023 906th msbranicky 463 117 2ms 6 Jan 2024 907th snoozingnewt 🇨🇦 462 145 38ms 15 Oct 2025 908th Emutis 🇱🇹 461 138 17ms 4 Aug 2025 909th CatsAreFluffy 461 140 4ms 31 Jan 2024 910th msbranicky 460 159 365ms 2 Jan 2024 911th Liibe 456 166 476ms 2 Oct 2025 912th pedro-a-soares 455 127 9ms 6 Dec 2023 913th AtengChen 454 140 12ms 14 Aug 2024 914th snoozingnewt 🇨🇦 454 158 26ms 15 Oct 2025 915th snoozingnewt 🇨🇦 453 92 50ms 15 Oct 2025 916th HumanoidCPU 450 139 124ms 5 Jun 2024 917th sidok 449 111 465ms 26 Apr 2024 918th aydamak 448 93 38ms 15 May 2024 919th ridingqwerty 🇺🇸 448 142 17ms 28 Dec 2023 919th CyberTapir 448 142 11ms 5 Sep 2024 919th wobblybits 448 142 21ms 20 Aug 2025 919th cthierfelder 🇲🇨 448 142 20ms 14 Nov 2025 923rd msbranicky 445 153 123ms 2 Jan 2024 924th sciencejiho 444 143 21ms 18 Oct 2024 924th Andrey135296 444 143 12ms 26 Oct 2024 926th Kaffeleif 444 156 13ms 13 Mar 2024 927th KatieLG 🇬🇧 441 131 61ms 13 Jun 2024 928th HumanoidCPU 441 165 3,999ms 24 Oct 2024 929th snoozingnewt 🇨🇦 439 115 9ms 15 Oct 2025 930th sultan 438 145 10ms 3 Mar 2024 930th alexeldridge 438 145 18ms 12 Aug 2024 930th ComputerKWasTaken 🇺🇸 438 145 25ms 23 Apr 2025 933rd BambooleanLogic 🇸🇪 437 132 24ms 1 Dec 2023 934th KatieLG 🇬🇧 436 100 138ms 2 Jan 2024 935th dokutan 436 124 139ms 26 Oct 2024 936th ridingqwerty 🇺🇸 435 141 475ms 25 Jan 2024 937th amollberg 🇸🇪 435 146 19ms 8 Jan 2024 938th janbehrens 🇩🇪 433 175 424ms 16 Dec 2023 939th dokutan 432 146 39ms 29 Oct 2024 940th acollett89 431 134 23ms 5 Aug 2025 941st snoozingnewt 🇨🇦 429 129 5ms 15 Oct 2025 942nd epic-programmer-guy 428 170 130ms 3 Jan 2024 943rd Alban-Boissard 427 149 47ms 14 Jun 2025 944th inverseLorentz 🇦🇺 426 171 135ms 6 Apr 2024 945th itserasmus 424 136 10ms 26 Jan 2024 946th snoozingnewt 🇨🇦 423 139 108ms 15 Oct 2025 947th CatsAreFluffy 423 172 160ms 17 Dec 2023 948th msbranicky 422 118 236ms 11 Jan 2024 949th msbranicky 422 169 11ms 2 Jan 2024 950th dokutan 421 99 44ms 29 Oct 2024 951st 77Tigers 421 151 11ms 22 Jun 2024 952nd XenThe 🇬🇧 415 139 10ms 14 Sep 2025 953rd jfallon1997 415 153 20ms 3 Jun 2024 954th snoozingnewt 🇨🇦 414 151 125ms 15 Oct 2025 955th snoozingnewt 🇨🇦 414 173 40ms 15 Oct 2025 956th olleicua 🇺🇸 409 141 24ms 20 Jan 2024 957th unfinishedprogram 407 142 11ms 5 Dec 2023 958th JunkIce 407 151 525ms 8 Jan 2025 959th AzroyAr 407 156 23ms 28 Dec 2023 960th msbranicky 407 186 409ms 2 Jan 2024 First Prev 881–960 of 1,484 Next Last