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 🇦🇶 891 110 2,640ms 20 Feb 2023 562nd jared-hughes 891 130 23ms 15 Dec 2024 563rd canissimia 🇦🇶 891 204 16ms 25 Nov 2023 564th primo-ppcg 🇹🇭 890 52 219ms 5 May 2022 564th dvargas46 🇺🇸 890 52 89ms 22 Dec 2022 566th mousetail 🇳🇱 888 41 66ms 29 Aug 2025 567th MeWhenI 🇻🇦 888 53 40ms 1 Jun 2022 567th stefangimmillaro 888 53 37ms 2 Oct 2022 567th Haksell 🇦🇶 888 53 45ms 22 Feb 2023 570th primo-ppcg 🇹🇭 888 85 39ms 14 Jan 2025 570th MeWhenI 🇻🇦 888 85 41ms 21 Apr 2025 572nd ovs-code 🇩🇪 887 73 340ms 22 Jul 2023 573rd janbehrens 🇩🇪 887 90 481ms 21 Apr 2023 573rd Yewzir 🇧🇪 887 90 459ms 22 Apr 2023 573rd Ripick 887 90 459ms 27 Nov 2024 573rd emgordon154 887 90 476ms 10 Dec 2025 577th albanian-laundromat 887 94 486ms 24 Sep 2025 577th jkelly467 887 94 401ms 23 Oct 2025 577th HumanoidCPU 887 94 479ms 8 Nov 2025 580th snoozingnewt 🇨🇦 887 96 107ms 4 Dec 2025 581st GolfingSuccess 🇬🇷 886 71 2ms 5 May 2022 581st emplv 🇱🇻 886 71 2ms 5 May 2022 581st JayXon 🇺🇸 886 71 2ms 7 May 2022 581st nwellnhof 🇩🇪 886 71 2ms 5 Jun 2022 581st stefangimmillaro 886 71 2ms 2 Jun 2023 581st 09cf 886 71 7ms 4 Oct 2023 581st kkoenig 886 71 2ms 21 Dec 2023 581st sean-niemann 🇺🇸 886 71 2ms 10 Jul 2024 581st masinag 🇮🇹 886 71 2ms 6 Oct 2024 590th frosster 🇨🇦 886 77 5ms 9 days ago 591st SiestaGuru 886 88 411ms 9 Jan 2023 591st rifatx 886 88 390ms 5 Jul 2024 591st kmathis22 886 88 398ms 25 Sep 2025 594th m-tkach 🇺🇦 886 112 130ms 22 Jun 2025 595th steffan-polygolf 885 74 136ms 14 Feb 2024 595th prestosilver 🇺🇸 885 74 115ms 18 Dec 2025 597th nipzu 885 94 120ms 17 May 2022 597th Natanaelel 🇸🇪 885 94 128ms 17 Jun 2022 597th nkoppel 885 94 123ms 19 Oct 2022 597th ovs-code 🇩🇪 885 94 118ms 21 Jun 2023 597th mousetail 🇳🇱 885 94 127ms 12 Jan 2024 602nd m-tkach 🇺🇦 884 59 401ms 21 Jan 2024 602nd GolfingSuccess 🇬🇷 884 59 502ms 20 Jan 2025 602nd duckyluuk 🇳🇱 884 59 409ms 4 Dec 2025 605th kg583 🇺🇸 884 84 17ms 30 Jul 2025 605th DialFrost 🇸🇬 884 84 19ms 1 Jan 2026 607th Irratix 🇳🇱 884 96 57ms 4 May 2022 607th MeWhenI 🇻🇦 884 96 54ms 1 Jun 2022 607th janbehrens 🇩🇪 884 96 57ms 21 Apr 2023 607th Shanethegamer 🇺🇸 884 96 57ms 15 May 2023 607th Yewzir 🇧🇪 884 96 56ms 11 Nov 2023 607th MateuszPietrzak 🇵🇱 884 96 60ms 18 Nov 2023 607th kkoenig 884 96 58ms 21 Dec 2023 607th BlankSpruce 884 96 60ms 20 Aug 2024 607th fuzzylojik-golf 🇺🇸 884 96 60ms 14 Jun 2025 607th dokutan 884 96 58ms 9 days ago 617th sean-niemann 🇺🇸 884 109 288ms 25 May 2024 617th GolfingSuccess 🇬🇷 884 109 279ms 6 Sep 2025 619th MichalMarsalek 🇨🇿 883 70 20ms 5 May 2022 619th primo-ppcg 🇹🇭 883 70 25ms 5 May 2022 619th SirBogman 🇺🇸 883 70 19ms 5 May 2022 619th prplz 🇦🇺 883 70 29ms 5 May 2022 619th Irratix 🇳🇱 883 70 18ms 7 May 2022 619th rak1507 🇬🇧 883 70 20ms 7 May 2022 619th inventshah 883 70 18ms 9 May 2022 619th k3w1k0d3r 883 70 22ms 22 Jun 2022 619th ZakkkkAttackkkk 🇵🇭 883 70 18ms 14 Jul 2022 619th Bonjour27891 🇻🇳 883 70 20ms 14 Jul 2022 619th OllieBoyne 🇬🇧 883 70 20ms 19 Jul 2022 619th wen1now 883 70 20ms 8 Aug 2022 619th 051 🇸🇬 883 70 19ms 8 Aug 2022 619th Sp3000 🇦🇺 883 70 21ms 8 Aug 2022 619th betaveros 883 70 19ms 9 Aug 2022 619th shelerr 883 70 20ms 9 Sep 2022 619th stewSquared 🇺🇸 883 70 20ms 27 Sep 2022 619th orthoplex 🇨🇽 883 70 24ms 9 Oct 2022 619th 5quiwyrm 883 70 21ms 19 Oct 2022 619th myfatemi04 883 70 22ms 4 Nov 2022 619th kevinmchung 883 70 21ms 4 Nov 2022 619th FlorianCassayre 🇫🇷 883 70 18ms 7 Nov 2022 First Prev 561–640 of 3,580 Next Last