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 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 Mandelbrot 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 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 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 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 Mandelbrot 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 825th Yewzir 🇧🇪 887 151 21 May 2024 827th GolfingSuccess 🇬🇷 885 71 5 May 2022 827th emplv 🇱🇻 885 71 5 May 2022 827th JayXon 🇺🇸 885 71 7 May 2022 827th nwellnhof 🇩🇪 885 71 5 Jun 2022 827th stefangimmillaro 885 71 2 Jun 2023 827th catfish000 885 71 4 Oct 2023 827th kkoenig 885 71 21 Dec 2023 827th sean-niemann 🇺🇸 885 71 10 Jul 2024 827th masinag 🇮🇹 885 71 6 Oct 2024 827th KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 837th m-tkach 🇺🇦 885 117 7 May 2022 837th Lydxn 🇨🇦 885 117 7 May 2022 839th SiestaGuru 884 88 9 Jan 2023 839th rifatx 884 88 5 Jul 2024 841st janbehrens 🇩🇪 884 90 21 Apr 2023 841st Yewzir 🇧🇪 884 90 22 Apr 2023 841st DialFrost 🇸🇬 884 90 6 Nov 2023 841st Ripick 884 90 27 Nov 2024 845th jared-hughes 884 130 15 Dec 2024 846th m-tkach 🇺🇦 883 59 21 Jan 2024 846th GolfingSuccess 🇬🇷 883 59 20 Jan 2025 848th Shanethegamer 🇺🇸 883 70 12 Dec 2022 848th Alessandro-Balconi 🇮🇹 883 70 26 Dec 2022 850th nipzu 883 94 17 May 2022 850th Natanaelel 🇸🇪 883 94 17 Jun 2022 850th nkoppel 883 94 19 Oct 2022 850th ovs-code 🇩🇪 883 94 21 Jun 2023 850th mousetail 🇳🇱 883 94 12 Jan 2024 855th m-tkach 🇺🇦 883 113 15 Jan 2025 856th Shanethegamer 🇺🇸 882 51 15 May 2023 857th primo-ppcg 🇹🇭 882 85 14 Jan 2025 857th MeWhenI 🇻🇦 882 85 21 Apr 2025 859th Irratix 🇳🇱 882 96 4 May 2022 859th MeWhenI 🇻🇦 882 96 1 Jun 2022 859th janbehrens 🇩🇪 882 96 21 Apr 2023 859th Shanethegamer 🇺🇸 882 96 15 May 2023 859th Yewzir 🇧🇪 882 96 11 Nov 2023 859th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 859th kkoenig 882 96 21 Dec 2023 859th BlankSpruce 882 96 20 Aug 2024 859th fuzzylojik-golf 🇺🇸 882 96 6 days ago 868th GrayJoKing 🇦🇺 881 60 24 Oct 2024 869th ovs-code 🇩🇪 881 73 22 Jul 2023 870th steffan-polygolf 881 74 14 Feb 2024 871st ravnskjaer 🇩🇰 881 133 11 Sep 2024 872nd Shanethegamer 🇺🇸 881 152 9 Sep 2023 872nd emgordon154 881 152 2 Oct 2024 872nd DialFrost 🇸🇬 881 152 27 Oct 2024 875th Shanethegamer 🇺🇸 879 142 27 Mar 2025 875th DialFrost 🇸🇬 879 142 28 Mar 2025 875th emgordon154 879 142 10 Apr 2025 878th Grrisly 878 74 25 Mar 2024 879th GrayJoKing 🇦🇺 878 84 19 Jun 2022 879th primo-ppcg 🇹🇭 878 84 29 Jun 2022 881st dokutan 877 62 28 Apr 2025 882nd Shanethegamer 🇺🇸 877 66 4 May 2022 882nd scpchicken 🇵🇼 877 66 5 May 2022 882nd sisyphus-ppcg 🇦🇺 877 66 6 May 2022 882nd Natanaelel 🇸🇪 877 66 15 Jun 2022 882nd Z-snails 877 66 27 Feb 2023 882nd Jeremy-Stafford 877 66 27 Feb 2023 882nd alomiF 877 66 1 Sep 2023 882nd btnlq 877 66 17 Oct 2023 890th Shanethegamer 🇺🇸 877 73 8 May 2025 890th DialFrost 🇸🇬 877 73 16 days ago 892nd c0d3-4-F00d 🇩🇪 876 61 6 May 2022 892nd jackkav 876 61 26 Jun 2022 892nd TechNolaByte 876 61 6 Jul 2022 892nd Heathcorp 🇦🇺 876 61 17 Jul 2022 892nd C0de5mith 🇺🇸 876 61 3 Aug 2022 892nd sebipopa 🇷🇴 876 61 18 Aug 2022 892nd moikaturns 🇬🇧 876 61 25 Sep 2022 892nd FlorianCassayre 🇫🇷 876 61 27 Sep 2022 892nd Mazn3k 876 61 1 Feb 2023 Prev 826–900 of 3,131 Next