The Calendar hole will go live in approximately 7 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 721st annaproxy 603 107 2ms 20 Dec 2023 722nd MeWhenI 🇻🇦 603 132 90ms 1 Dec 2023 723rd msbranicky 603 235 1,619ms 16 Sep 2025 724th SirBogman 🇺🇸 602 70 253ms 28 Feb 2024 725th dokutan 602 113 96ms 31 Oct 2024 726th Yewzir 🇧🇪 601 96 10ms 5 Feb 2024 727th Yewzir 🇧🇪 599 135 456ms 5 Feb 2024 728th JRaspass 🇬🇧 598 73 116ms 4 Jan 2024 729th snoozingnewt 🇨🇦 598 133 86ms 15 Oct 2025 730th dokutan 598 237 1,728ms 19 Oct 2025 731st Natanaelel 🇸🇪 597 122 137ms 22 Mar 2024 732nd MeWhenI 🇻🇦 594 71 251ms 1 Dec 2023 733rd emgordon154 593 126 12ms 2 Jan 2025 734th dokutan 592 106 2ms 12 Nov 2025 735th Yewzir 🇧🇪 592 115 110ms 5 Feb 2024 736th dokutan 592 144 60ms 30 Mar 2025 737th CatsAreFluffy 591 93 52ms 14 Mar 2024 738th dokutan 591 119 82ms 31 Mar 2025 739th dokutan 590 104 432ms 28 Oct 2024 740th janbehrens 🇩🇪 590 137 433ms 22 Dec 2023 741st neihousaigaai 589 108 12ms 11 Feb 2024 742nd janbehrens 🇩🇪 588 145 60ms 22 Dec 2023 743rd HumanoidCPU 588 164 272ms 26 Aug 2024 744th msbranicky 587 112 2ms 2 Jan 2024 745th dokutan 586 85 711ms 9 Apr 2024 746th arctouch-cristiannevianna 585 125 358ms 19 Feb 2024 747th Bodo171 583 109 10ms 1 Jul 2024 747th trist224 🇫🇷 583 109 13ms 3 Aug 2025 749th dokutan 583 130 454ms 24 Sep 2025 749th Yewzir 🇧🇪 583 130 485ms 2 Oct 2025 751st Jonatan6 🇩🇰 581 111 2ms 27 Apr 2024 751st dokutan 581 111 3ms 30 Mar 2025 753rd MeWhenI 🇻🇦 580 132 3ms 1 Dec 2023 754th rollershutter 578 110 11ms 20 Dec 2023 754th fourth-bit 578 110 21ms 1 Jul 2024 754th jipsong 🇩🇪 578 110 20ms 5 Jul 2025 757th coreynash 577 100 10ms 14 Jul 2024 757th snoozingnewt 🇨🇦 577 100 10ms 15 Oct 2025 759th Yewzir 🇧🇪 577 139 116ms 5 Feb 2024 760th Jonatan6 🇩🇰 576 148 62ms 27 Apr 2024 761st snoozingnewt 🇨🇦 574 141 374ms 15 Oct 2025 762nd minhtrancccp 573 111 10ms 1 Dec 2023 762nd croc54 573 111 20ms 30 Dec 2024 762nd Mikey-Beep 🇬🇧 573 111 21ms 24 Jul 2025 762nd KatieLG 🇬🇧 573 111 19ms 15 Sep 2025 762nd CommandLeo 🇮🇹 573 111 21ms 1 Nov 2025 767th snoozingnewt 🇨🇦 572 115 2ms 15 Oct 2025 768th c0d3-4-F00d 🇩🇪 571 113 2ms 4 Dec 2023 768th bac0id 571 113 2ms 10 Jan 2025 770th steffan-polygolf 570 131 4ms 29 Feb 2024 771st ethanlally 570 133 363ms 14 Nov 2025 771st snoozingnewt 🇨🇦 570 133 419ms 18 days ago 773rd rboath 569 108 90ms 17 Dec 2024 774th brimstonetrader 569 128 130ms 23 Feb 2024 775th snoozingnewt 🇨🇦 569 150 401ms 15 Oct 2025 776th knutae 🇳🇴 568 112 21ms 16 Dec 2023 777th msbranicky 568 128 3,130ms 9 Jan 2025 778th dokutan 567 129 377ms 26 Oct 2024 778th snoozingnewt 🇨🇦 567 129 384ms 15 Oct 2025 780th madeforlosers 563 112 41ms 8 Dec 2023 781st mathisfun271 562 113 19ms 23 Dec 2023 781st fkantelberg 562 113 21ms 12 Jul 2025 783rd Natanaelel 🇸🇪 562 133 19ms 29 Dec 2023 784th snoozingnewt 🇨🇦 560 130 119ms 15 Oct 2025 785th Chinay-Domitrix 🇺🇸 559 130 3,192ms 4 Nov 2025 786th snoozingnewt 🇨🇦 559 170 25ms 15 Oct 2025 787th dokutan 558 102 715ms 22 Sep 2025 788th jerrandolph 558 173 260ms 22 Dec 2023 789th dokutan 554 111 90ms 31 Mar 2025 790th mrmena 🇦🇺 553 114 43ms 11 May 2024 791st anarconic 553 115 10ms 11 Dec 2023 791st moustave 553 115 20ms 19 Nov 2024 791st damoose717 553 115 20ms 23 May 2025 794th CarsonChr 🇺🇸 553 145 122ms 24 Dec 2023 795th kkoenig 551 117 2ms 22 Dec 2023 796th dokutan 551 132 3,183ms 26 Oct 2024 797th dokutan 550 105 9ms 5 Jun 2025 798th msbranicky 550 155 1,014ms 2 Jan 2024 799th msbranicky 549 112 88ms 8 Jan 2024 800th MeWhenI 🇻🇦 548 115 68ms 1 Dec 2023 First Prev 721–800 of 1,483 Next Last