Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 781st bknower 888 75 3 days ago 827th c0d3-4-F00d 🇩🇪 888 132 6 May 2022 827th madeforlosers 888 132 26 Oct 2023 827th Blockyheadman 888 132 1 Nov 2023 827th SpiritAxolotl 🇺🇸 888 132 20 Mar 2024 831st canissimia 🇦🇶 888 204 25 Nov 2023 832nd MeWhenI 🇻🇦 887 53 1 Jun 2022 832nd stefangimmillaro 887 53 2 Oct 2022 832nd Haksell 🇦🇶 887 53 22 Feb 2023 835th ovs-code 🇩🇪 887 151 9 Sep 2023 835th Yewzir 🇧🇪 887 151 21 May 2024 837th GolfingSuccess 🇬🇷 885 71 5 May 2022 837th emplv 🇱🇻 885 71 5 May 2022 837th JayXon 🇺🇸 885 71 7 May 2022 837th nwellnhof 🇩🇪 885 71 5 Jun 2022 837th stefangimmillaro 885 71 2 Jun 2023 837th 09cf 885 71 4 Oct 2023 837th kkoenig 885 71 21 Dec 2023 837th sean-niemann 🇺🇸 885 71 10 Jul 2024 837th masinag 🇮🇹 885 71 6 Oct 2024 837th KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 847th m-tkach 🇺🇦 885 117 7 May 2022 847th Lydxn 🇨🇦 885 117 7 May 2022 849th Shanethegamer 🇺🇸 884 70 12 Dec 2022 849th Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 851st SiestaGuru 884 88 9 Jan 2023 851st rifatx 884 88 5 Jul 2024 853rd janbehrens 🇩🇪 884 90 21 Apr 2023 853rd Yewzir 🇧🇪 884 90 22 Apr 2023 853rd DialFrost 🇸🇬 884 90 6 Nov 2023 853rd Ripick 884 90 27 Nov 2024 857th m-tkach 🇺🇦 884 112 11 days ago 858th jared-hughes 884 130 15 Dec 2024 859th m-tkach 🇺🇦 883 59 21 Jan 2024 859th GolfingSuccess 🇬🇷 883 59 20 Jan 2025 861st nipzu 883 94 17 May 2022 861st Natanaelel 🇸🇪 883 94 17 Jun 2022 861st nkoppel 883 94 19 Oct 2022 861st ovs-code 🇩🇪 883 94 21 Jun 2023 861st mousetail 🇳🇱 883 94 12 Jan 2024 866th Shanethegamer 🇺🇸 882 51 15 May 2023 867th steffan-polygolf 882 74 14 Feb 2024 868th primo-ppcg 🇹🇭 882 85 14 Jan 2025 868th MeWhenI 🇻🇦 882 85 21 Apr 2025 870th Irratix 🇳🇱 882 96 4 May 2022 870th MeWhenI 🇻🇦 882 96 1 Jun 2022 870th janbehrens 🇩🇪 882 96 21 Apr 2023 870th Shanethegamer 🇺🇸 882 96 15 May 2023 870th Yewzir 🇧🇪 882 96 11 Nov 2023 870th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 870th kkoenig 882 96 21 Dec 2023 870th BlankSpruce 882 96 20 Aug 2024 870th fuzzylojik-golf 🇺🇸 882 96 19 days ago 879th GrayJoKing 🇦🇺 881 60 24 Oct 2024 880th ovs-code 🇩🇪 881 73 22 Jul 2023 881st ravnskjaer 🇩🇰 881 133 11 Sep 2024 882nd Shanethegamer 🇺🇸 881 152 9 Sep 2023 882nd emgordon154 881 152 2 Oct 2024 882nd DialFrost 🇸🇬 881 152 27 Oct 2024 885th Shanethegamer 🇺🇸 879 142 27 Mar 2025 885th DialFrost 🇸🇬 879 142 28 Mar 2025 885th emgordon154 879 142 10 Apr 2025 888th dokutan 878 62 28 Apr 2025 889th Grrisly 878 74 25 Mar 2024 890th GrayJoKing 🇦🇺 878 84 19 Jun 2022 890th primo-ppcg 🇹🇭 878 84 29 Jun 2022 892nd Shanethegamer 🇺🇸 877 66 4 May 2022 892nd scpchicken 🇵🇼 877 66 5 May 2022 892nd sisyphus-ppcg 🇦🇺 877 66 6 May 2022 892nd Natanaelel 🇸🇪 877 66 15 Jun 2022 892nd Z-snails 877 66 27 Feb 2023 892nd Jeremy-Stafford 877 66 27 Feb 2023 892nd alomiF 877 66 1 Sep 2023 892nd btnlq 877 66 17 Oct 2023 900th Shanethegamer 🇺🇸 877 73 8 May 2025 Prev 826–900 of 3,165 Next