Collatz 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 503rd Protothor 892 60 10ms 8 Jul 2025 503rd SebassNoob 892 60 10ms 5 Aug 2025 503rd Yax42 🇫🇷 892 60 10ms 5 Sep 2025 503rd levinwinter 892 60 10ms 22 Oct 2025 503rd Cube14yt 892 60 10ms 24 days ago 503rd gigaprofisi 🇺🇸 892 60 10ms 23 days ago 532nd stefangimmillaro 892 71 87ms 2 Oct 2022 532nd Steffan153 🇫🇮 892 71 94ms 23 Feb 2023 532nd Shanethegamer 🇺🇸 892 71 90ms 16 May 2023 532nd sean-niemann 🇺🇸 892 71 86ms 12 Jul 2024 536th RockOfStone 892 73 4ms 20 Oct 2025 537th Lydxn 🇨🇦 892 108 263ms 6 May 2022 537th CaedenHarper 🇨🇦 892 108 308ms 5 Oct 2025 539th lynn 891 65 283ms 5 May 2022 539th GrayJoKing 🇦🇺 891 65 250ms 5 May 2022 539th Sakisan 🇧🇪 891 65 178ms 6 May 2022 539th JayXon 🇺🇸 891 65 311ms 17 Oct 2022 539th Steffan153 🇫🇮 891 65 185ms 12 Nov 2022 539th tobeannouncd 891 65 312ms 25 Apr 2025 539th sean-niemann 🇺🇸 891 65 168ms 9 Jun 2025 546th GrayJoKing 🇦🇺 891 77 96ms 13 Sep 2024 547th DialFrost 🇸🇬 891 95 29ms 10 Dec 2024 548th canissimia 🇦🇶 891 110 2,640ms 20 Feb 2023 549th jared-hughes 891 130 23ms 15 Dec 2024 550th primo-ppcg 🇹🇭 890 52 211ms 5 May 2022 550th dvargas46 🇺🇸 890 52 85ms 22 Dec 2022 552nd canissimia 🇦🇶 890 204 16ms 25 Nov 2023 553rd mousetail 🇳🇱 888 41 66ms 29 Aug 2025 554th MeWhenI 🇻🇦 888 53 36ms 1 Jun 2022 554th stefangimmillaro 888 53 35ms 2 Oct 2022 554th Haksell 🇦🇶 888 53 36ms 22 Feb 2023 557th primo-ppcg 🇹🇭 888 85 39ms 14 Jan 2025 557th MeWhenI 🇻🇦 888 85 41ms 21 Apr 2025 559th ovs-code 🇩🇪 887 73 274ms 22 Jul 2023 560th albanian-laundromat 887 94 415ms 24 Sep 2025 560th jkelly467 887 94 544ms 23 Oct 2025 560th HumanoidCPU 887 94 397ms 8 Nov 2025 563rd Shanethegamer 🇺🇸 886 70 99ms 12 Dec 2022 563rd Alessandro-Balconi 🇮🇹 886 70 95ms 26 Dec 2022 565th GolfingSuccess 🇬🇷 886 71 2ms 5 May 2022 565th emplv 🇱🇻 886 71 2ms 5 May 2022 565th JayXon 🇺🇸 886 71 2ms 7 May 2022 565th nwellnhof 🇩🇪 886 71 2ms 5 Jun 2022 565th stefangimmillaro 886 71 2ms 2 Jun 2023 565th 09cf 886 71 7ms 4 Oct 2023 565th kkoenig 886 71 2ms 21 Dec 2023 565th sean-niemann 🇺🇸 886 71 2ms 10 Jul 2024 565th masinag 🇮🇹 886 71 2ms 6 Oct 2024 574th janbehrens 🇩🇪 886 90 442ms 21 Apr 2023 574th Yewzir 🇧🇪 886 90 426ms 22 Apr 2023 574th DialFrost 🇸🇬 886 90 440ms 6 Nov 2023 574th Ripick 886 90 439ms 27 Nov 2024 574th emgordon154 886 90 368ms 23 hours ago 579th m-tkach 🇺🇦 886 112 118ms 22 Jun 2025 580th SiestaGuru 885 88 314ms 9 Jan 2023 580th rifatx 885 88 327ms 5 Jul 2024 580th kmathis22 885 88 343ms 25 Sep 2025 580th arcpolaris 885 88 329ms 8 Nov 2025 584th snoozingnewt 🇨🇦 885 96 97ms 6 days ago 585th m-tkach 🇺🇦 884 59 404ms 21 Jan 2024 585th GolfingSuccess 🇬🇷 884 59 474ms 20 Jan 2025 585th duckyluuk 🇳🇱 884 59 450ms 6 days ago 588th steffan-polygolf 884 74 136ms 14 Feb 2024 589th kg583 🇺🇸 884 84 18ms 30 Jul 2025 590th nipzu 884 94 189ms 17 May 2022 590th Natanaelel 🇸🇪 884 94 161ms 17 Jun 2022 590th nkoppel 884 94 192ms 19 Oct 2022 590th ovs-code 🇩🇪 884 94 300ms 21 Jun 2023 590th mousetail 🇳🇱 884 94 186ms 12 Jan 2024 595th sean-niemann 🇺🇸 884 109 274ms 25 May 2024 595th GolfingSuccess 🇬🇷 884 109 273ms 6 Sep 2025 597th MichalMarsalek 🇨🇿 883 70 19ms 5 May 2022 597th primo-ppcg 🇹🇭 883 70 23ms 5 May 2022 597th SirBogman 🇺🇸 883 70 19ms 5 May 2022 597th prplz 🇦🇺 883 70 18ms 5 May 2022 First Prev 526–600 of 3,513 Next Last