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 Calendar 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 Multitap Input 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 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 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar 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 Multitap Input 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 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 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 561st canissimia 🇦🇶 891 204 16ms 25 Nov 2023 562nd primo-ppcg 🇹🇭 890 52 219ms 5 May 2022 562nd dvargas46 🇺🇸 890 52 89ms 22 Dec 2022 564th mousetail 🇳🇱 888 41 66ms 29 Aug 2025 565th MeWhenI 🇻🇦 888 53 40ms 1 Jun 2022 565th stefangimmillaro 888 53 37ms 2 Oct 2022 565th Haksell 🇦🇶 888 53 45ms 22 Feb 2023 568th primo-ppcg 🇹🇭 888 85 39ms 14 Jan 2025 568th MeWhenI 🇻🇦 888 85 41ms 21 Apr 2025 570th ovs-code 🇩🇪 887 73 340ms 22 Jul 2023 571st janbehrens 🇩🇪 887 90 442ms 21 Apr 2023 571st Yewzir 🇧🇪 887 90 426ms 22 Apr 2023 571st Ripick 887 90 439ms 27 Nov 2024 571st emgordon154 887 90 368ms 10 Dec 2025 575th albanian-laundromat 887 94 486ms 24 Sep 2025 575th jkelly467 887 94 401ms 23 Oct 2025 575th HumanoidCPU 887 94 479ms 8 Nov 2025 578th snoozingnewt 🇨🇦 887 96 107ms 4 Dec 2025 579th GolfingSuccess 🇬🇷 886 71 2ms 5 May 2022 579th emplv 🇱🇻 886 71 2ms 5 May 2022 579th JayXon 🇺🇸 886 71 2ms 7 May 2022 579th nwellnhof 🇩🇪 886 71 2ms 5 Jun 2022 579th stefangimmillaro 886 71 2ms 2 Jun 2023 579th 09cf 886 71 7ms 4 Oct 2023 579th kkoenig 886 71 2ms 21 Dec 2023 579th sean-niemann 🇺🇸 886 71 2ms 10 Jul 2024 579th masinag 🇮🇹 886 71 2ms 6 Oct 2024 588th SiestaGuru 886 88 411ms 9 Jan 2023 588th rifatx 886 88 390ms 5 Jul 2024 588th kmathis22 886 88 398ms 25 Sep 2025 591st m-tkach 🇺🇦 886 112 130ms 22 Jun 2025 592nd steffan-polygolf 885 74 136ms 14 Feb 2024 592nd prestosilver 🇺🇸 885 74 115ms 18 Dec 2025 594th frosster 885 77 6ms 21 hours ago 595th nipzu 885 94 118ms 17 May 2022 595th Natanaelel 🇸🇪 885 94 118ms 17 Jun 2022 595th nkoppel 885 94 128ms 19 Oct 2022 595th ovs-code 🇩🇪 885 94 125ms 21 Jun 2023 595th mousetail 🇳🇱 885 94 130ms 12 Jan 2024 600th m-tkach 🇺🇦 884 59 401ms 21 Jan 2024 600th GolfingSuccess 🇬🇷 884 59 502ms 20 Jan 2025 600th duckyluuk 🇳🇱 884 59 409ms 4 Dec 2025 603rd kg583 🇺🇸 884 84 17ms 30 Jul 2025 603rd DialFrost 🇸🇬 884 84 19ms 1 Jan 2026 605th Irratix 🇳🇱 884 96 57ms 4 May 2022 605th MeWhenI 🇻🇦 884 96 54ms 1 Jun 2022 605th janbehrens 🇩🇪 884 96 57ms 21 Apr 2023 605th Shanethegamer 🇺🇸 884 96 57ms 15 May 2023 605th Yewzir 🇧🇪 884 96 56ms 11 Nov 2023 605th MateuszPietrzak 🇵🇱 884 96 60ms 18 Nov 2023 605th kkoenig 884 96 58ms 21 Dec 2023 605th BlankSpruce 884 96 60ms 20 Aug 2024 605th fuzzylojik-golf 🇺🇸 884 96 60ms 14 Jun 2025 605th dokutan 884 96 68ms 22 hours ago 615th sean-niemann 🇺🇸 884 109 258ms 25 May 2024 615th GolfingSuccess 🇬🇷 884 109 264ms 6 Sep 2025 617th MichalMarsalek 🇨🇿 883 70 20ms 5 May 2022 617th primo-ppcg 🇹🇭 883 70 25ms 5 May 2022 617th SirBogman 🇺🇸 883 70 19ms 5 May 2022 617th prplz 🇦🇺 883 70 29ms 5 May 2022 617th Irratix 🇳🇱 883 70 18ms 7 May 2022 617th rak1507 🇬🇧 883 70 20ms 7 May 2022 617th inventshah 883 70 18ms 9 May 2022 617th k3w1k0d3r 883 70 22ms 22 Jun 2022 617th ZakkkkAttackkkk 🇵🇭 883 70 18ms 14 Jul 2022 617th Bonjour27891 🇻🇳 883 70 20ms 14 Jul 2022 617th OllieBoyne 🇬🇧 883 70 20ms 19 Jul 2022 617th wen1now 883 70 20ms 8 Aug 2022 617th 051 🇸🇬 883 70 19ms 8 Aug 2022 617th Sp3000 🇦🇺 883 70 21ms 8 Aug 2022 617th betaveros 883 70 19ms 9 Aug 2022 617th shelerr 883 70 20ms 9 Sep 2022 617th stewSquared 🇺🇸 883 70 20ms 27 Sep 2022 617th orthoplex 🇨🇽 883 70 24ms 9 Oct 2022 617th 5quiwyrm 883 70 21ms 19 Oct 2022 617th myfatemi04 883 70 22ms 4 Nov 2022 617th kevinmchung 883 70 21ms 4 Nov 2022 617th FlorianCassayre 🇫🇷 883 70 18ms 7 Nov 2022 617th fourth-bit 883 70 19ms 29 Nov 2022 617th QuincyNash 🇺🇸 883 70 20ms 29 Nov 2022 First Prev 561–640 of 3,572 Next Last