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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 153rd thisishowmymindworks 🇳🇴 939 57 14ms 28 Jun 2024 153rd Salutations45 939 57 11ms 18 Nov 2024 153rd daniel-cardone 939 57 16ms 3 Jul 2025 153rd CaedenHarper 🇨🇦 939 57 11ms 28 Sep 2025 153rd BrunoVisnadi 🇧🇷 939 57 12ms 21 Oct 2025 153rd Laellekoenig 939 57 11ms 22 Oct 2025 153rd madex 🇩🇪 939 57 11ms 15 Mar 2026 168th Irratix 🇳🇱 939 83 432ms 4 May 2022 168th nwellnhof 🇩🇪 939 83 431ms 4 May 2022 168th ScottHamper 939 83 493ms 5 May 2022 168th Romain-1 🇫🇷 939 83 431ms 1 Jun 2022 168th Gaddy 🇫🇷 939 83 502ms 1 Jun 2022 168th 5quiwyrm 939 83 437ms 4 Sep 2022 168th Betuaredead 939 83 483ms 5 Jan 2023 168th Yewzir 🇧🇪 939 83 403ms 12 Feb 2023 168th btnlq 939 83 433ms 9 Mar 2023 168th Adix-null 🇱🇹 939 83 474ms 17 May 2023 168th AdrienHache 🇫🇷 939 83 444ms 8 Jun 2023 168th gblikas 939 83 449ms 23 Jul 2023 168th KrausRaus 🇺🇸 939 83 448ms 31 Jul 2023 168th namelessiw 939 83 422ms 9 Apr 2025 168th dokutan 939 83 463ms 9 Apr 2025 168th m-tkach 🇺🇦 939 83 410ms 10 Apr 2025 168th DialFrost 🇸🇬 939 83 432ms 10 Apr 2025 168th kylejcwu 939 83 435ms 19 Apr 2025 168th Tyrant7 939 83 413ms 19 Apr 2025 168th Yax42 🇫🇷 939 83 436ms 19 Apr 2025 168th MeWhenI 🇻🇦 939 83 445ms 19 Jun 2025 168th sean-niemann 🇺🇸 939 83 420ms 20 Jun 2025 168th stefangimmillaro 939 83 391ms 20 Jun 2025 168th tomh1012 939 83 429ms 28 Aug 2025 168th fuzzylojik-golf 🇺🇸 939 83 427ms 8 Sep 2025 168th CaedenHarper 🇨🇦 939 83 410ms 17 Oct 2025 168th arcpolaris 939 83 427ms 13 Jan 2026 168th amazingalek 🇳🇴 939 83 430ms 21 Jan 2026 168th scpchicken 🇵🇼 939 83 404ms 2 days ago 197th grey0ut 938 48 2,133ms 8 Apr 2025 198th JayXon 🇺🇸 937 66 1,468ms 18 Nov 2025 199th DialFrost 🇸🇬 937 89 470ms 24 Sep 2025 199th ovs-code 🇩🇪 937 89 514ms 24 Sep 2025 199th dokutan 937 89 671ms 24 Sep 2025 199th sean-niemann 🇺🇸 937 89 443ms 24 Sep 2025 199th Shanethegamer 🇺🇸 937 89 484ms 25 Sep 2025 199th nwellnhof 🇩🇪 937 89 491ms 25 Sep 2025 199th m-tkach 🇺🇦 937 89 504ms 25 Sep 2025 199th namelessiw 937 89 531ms 2 Oct 2025 199th Yewzir 🇧🇪 937 89 502ms 2 Oct 2025 199th Yax42 🇫🇷 937 89 458ms 4 Oct 2025 199th stefangimmillaro 937 89 537ms 6 Oct 2025 199th CaedenHarper 🇨🇦 937 89 482ms 9 Oct 2025 199th Jacob385 937 89 491ms 27 Oct 2025 199th MeWhenI 🇻🇦 937 89 536ms 7 Nov 2025 199th ethanlally 937 89 570ms 10 Nov 2025 199th snoozingnewt 🇨🇦 937 89 448ms 23 Nov 2025 199th ScottHamper 937 89 441ms 30 Nov 2025 199th KasperKivimaeki 🇫🇮 937 89 462ms 30 Nov 2025 217th JayXon 🇺🇸 936 73 4ms 23 Dec 2025 218th vang1ong7ang 935 89 132ms 17 days ago 219th nwellnhof 🇩🇪 934 42 380ms 4 May 2022 219th Lydxn 🇨🇦 934 42 1,594ms 4 May 2022 219th GrayJoKing 🇦🇺 934 42 396ms 4 May 2022 219th Steffan153 🇫🇮 934 42 387ms 16 Dec 2022 219th sisyphus-ppcg 🇦🇺 934 42 387ms 31 Jan 2023 219th ovs-code 🇩🇪 934 42 379ms 30 Dec 2023 219th sean-niemann 🇺🇸 934 42 385ms 8 Mar 2025 226th emplv 🇱🇻 934 60 9ms 5 May 2022 226th GrayJoKing 🇦🇺 934 60 11ms 6 May 2022 226th targrik 934 60 10ms 24 Dec 2024 226th xsot 🇸🇬 934 60 10ms 1 May 2025 230th m-tkach 🇺🇦 934 91 61ms 5 May 2022 230th 09cf 934 91 61ms 4 Oct 2023 230th Herbert00709 🇵🇱 934 91 67ms 5 days ago 233rd Steffan153 🇫🇮 932 51 2,104ms 19 Mar 2026 234th GrayJoKing 🇦🇺 932 56 470ms 15 Jan 2024 234th AlephSquirrel 932 56 419ms 21 Jan 2024 234th CaedenHarper 🇨🇦 932 56 379ms 26 Jan 2026 237th ovs-code 🇩🇪 932 60 5ms 9 Oct 2023 237th GrayJoKing 🇦🇺 932 60 4ms 11 Oct 2023 237th Lydxn 🇨🇦 932 60 5ms 11 Oct 2023 237th GolfingSuccess 🇬🇷 932 60 4ms 16 Nov 2023 First Prev 161–240 of 3,777 Next Last