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 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 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 ArkScript 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 ArkScript 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 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 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 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 401st shinh 905 52 39ms 29 Jun 2022 402nd Lydxn 🇨🇦 905 64 181ms 1 Apr 2023 403rd Lydxn 🇨🇦 905 70 91ms 7 May 2022 404th MeWhenI 🇻🇦 905 71 103ms 20 Aug 2024 405th m-tkach 🇺🇦 904 72 127ms 16 Oct 2022 405th GrayJoKing 🇦🇺 904 72 119ms 22 Oct 2022 405th emplv 🇱🇻 904 72 119ms 27 Oct 2022 405th sean-niemann 🇺🇸 904 72 137ms 7 Mar 2025 409th Steffan153 🇫🇮 904 82 42ms 1 Apr 2023 409th sean-niemann 🇺🇸 904 82 42ms 12 Jul 2024 411th stefangimmillaro 904 92 131ms 24 Oct 2023 411th inverseLorentz 🇦🇺 904 92 128ms 27 May 2024 411th sean-niemann 🇺🇸 904 92 125ms 8 Jun 2025 411th ian-h-chamberlain 🇺🇸 904 92 123ms 23 Nov 2025 415th michael-pruglo 🇺🇦 903 94 57ms 5 Jul 2022 415th zygoloid 903 94 56ms 5 Aug 2024 415th AdrienHache 🇫🇷 903 94 60ms 17 days ago 418th Lydxn 🇨🇦 902 69 7ms 12 Sep 2022 418th GrayJoKing 🇦🇺 902 69 7ms 12 Sep 2022 418th btnlq 902 69 7ms 24 Sep 2022 421st albanian-laundromat 901 107 251ms 22 days ago 422nd SirBogman 🇺🇸 900 50 402ms 5 May 2022 422nd nwellnhof 🇩🇪 900 50 397ms 3 Jun 2022 422nd Lydxn 🇨🇦 900 50 404ms 15 Aug 2022 422nd Steffan153 🇫🇮 900 50 408ms 9 Aug 2024 426th Steffan153 🇫🇮 900 67 113ms 18 Dec 2022 426th Lydxn 🇨🇦 900 67 116ms 4 Feb 2023 426th sean-niemann 🇺🇸 900 67 103ms 7 Mar 2025 429th Lydxn 🇨🇦 900 72 353ms 16 Jul 2023 430th Lydxn 🇨🇦 898 48 267ms 5 May 2022 430th p-zubieta 898 48 286ms 6 Mar 2024 432nd GrayJoKing 🇦🇺 898 70 3ms 6 May 2022 432nd saito-ta 🇯🇵 898 70 2ms 21 Dec 2023 432nd ovs-code 🇩🇪 898 70 2ms 17 Feb 2024 432nd trinityy-7 898 70 2ms 7 Aug 2025 432nd KasperKivimaeki 🇫🇮 898 70 6ms 8 Aug 2025 437th edsrzf 🇳🇿 898 78 11ms 26 Oct 2024 437th kg583 🇺🇸 898 78 12ms 25 Sep 2025 439th GrayJoKing 🇦🇺 898 91 29ms 19 Jan 2023 440th DialFrost 🇸🇬 897 29 160ms 15 Mar 2025 441st Steffan153 🇫🇮 897 59 131ms 10 Aug 2024 441st rucin93 🇵🇱 897 59 132ms 13 Oct 2024 441st sean-niemann 🇺🇸 897 59 134ms 13 Oct 2024 441st lukegustafson 🇺🇸 897 59 133ms 24 Oct 2024 445th Ripick 897 73 133ms 8 May 2023 446th nwellnhof 🇩🇪 896 69 22ms 4 May 2022 446th m-tkach 🇺🇦 896 69 17ms 4 May 2022 446th GolfingSuccess 🇬🇷 896 69 15ms 5 May 2022 446th jared-hughes 896 69 17ms 5 May 2022 446th ovs-code 🇩🇪 896 69 23ms 5 May 2022 446th btnlq 896 69 17ms 5 May 2022 446th sisyphus-ppcg 🇦🇺 896 69 14ms 6 May 2022 446th lynn 896 69 16ms 22 Aug 2022 446th Steffan153 🇫🇮 896 69 17ms 15 Nov 2022 446th AlexanderFair 896 69 23ms 19 Jul 2023 446th pardouin 🇫🇷 896 69 17ms 11 Nov 2023 446th AlephSquirrel 896 69 478ms 30 Dec 2023 446th kg583 🇺🇸 896 69 23ms 28 Jan 2024 446th davecame 896 69 22ms 20 Aug 2024 446th zacjl 896 69 17ms 19 Sep 2024 446th starfihs 896 69 16ms 12 Oct 2024 446th kops-cg 896 69 22ms 9 Feb 2025 446th sean-niemann 🇺🇸 896 69 17ms 7 Mar 2025 446th plcc0 896 69 15ms 26 Mar 2025 446th yujh-yujh 🇬🇸 896 69 16ms 28 Mar 2025 446th moustave 896 69 16ms 10 Jun 2025 446th 4atj 896 69 3,539ms 30 Jun 2025 446th dirckvdende 896 69 18ms 11 Jul 2025 446th xnor-gate 896 69 16ms 19 Aug 2025 446th BrunoVisnadi 🇧🇷 896 69 16ms 1 Oct 2025 446th Mukundan314 896 69 18ms 13 Nov 2025 446th bizy-coder 896 69 16ms 21 Nov 2025 446th duckyluuk 🇳🇱 896 69 17ms 4 Dec 2025 446th bricknellj 896 69 17ms 4 Dec 2025 446th Seek64 🇩🇪 896 69 16ms 18 days ago 476th MichalMarsalek 🇨🇿 896 87 366ms 5 May 2022 476th Kloppermand 🇩🇰 896 87 375ms 7 Oct 2022 476th bwat2 896 87 339ms 6 Apr 2023 476th amazingalek 896 87 354ms 19 days ago 480th ovs-code 🇩🇪 896 89 438ms 24 Jul 2024 First Prev 401–480 of 3,529 Next Last