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 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 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 316th Kacarott 🇦🇺 919 79 121ms 13 Jun 2024 322nd Shanethegamer 🇺🇸 919 87 461ms 15 May 2023 322nd JayXon 🇺🇸 919 87 481ms 15 May 2023 322nd Steffan153 🇫🇮 919 87 460ms 16 May 2023 322nd Lydxn 🇨🇦 919 87 456ms 16 May 2023 322nd GrayJoKing 🇦🇺 919 87 461ms 11 Aug 2023 322nd sean-niemann 🇺🇸 919 87 468ms 11 Jul 2024 328th JayXon 🇺🇸 919 105 360ms 4 Oct 2025 329th Mukundan314 918 65 1,671ms 3 days ago 330th Steffan153 🇫🇮 918 71 114ms 14 Oct 2022 330th Shanethegamer 🇺🇸 918 71 109ms 15 Oct 2022 330th stefangimmillaro 918 71 110ms 16 Oct 2022 330th MeWhenI 🇻🇦 918 71 113ms 16 Oct 2022 334th Lydxn 🇨🇦 917 81 39ms 1 Apr 2023 335th arctouch-cristiannevianna 917 85 408ms 3 Apr 2023 335th tomtheisen 🇺🇸 917 85 438ms 10 Apr 2025 337th kmathis22 917 91 370ms 20 Nov 2025 338th Natanaelel 🇸🇪 916 57 453ms 17 Jan 2024 338th Kacarott 🇦🇺 916 57 461ms 10 Sep 2024 340th Shanethegamer 🇺🇸 916 61 4ms 9 Oct 2023 341st ovs-code 🇩🇪 916 75 67ms 12 Sep 2024 341st Kacarott 🇦🇺 916 75 62ms 13 Sep 2024 343rd edsrzf 🇳🇿 915 52 977ms 9 Mar 2026 344th GrayJoKing 🇦🇺 915 71 321ms 10 Aug 2023 345th andersk 🇺🇸 915 91 134ms 25 Oct 2022 345th Super-Pizza 🇨🇦 915 91 132ms 4 Dec 2022 345th klixel 🇨🇦 915 91 124ms 20 May 2023 345th lynn 915 91 131ms 6 Jul 2024 345th edsrzf 🇳🇿 915 91 127ms 29 Nov 2024 345th DialFrost 🇸🇬 915 91 132ms 7 Apr 2025 345th elgan65536 🇺🇸 915 91 132ms 10 Feb 2026 345th fantaize 915 91 133ms 10 Mar 2026 345th snoozingnewt 🇨🇦 915 91 139ms 13 days ago 354th tailorspy 914 93 58ms 27 May 2024 354th sean-niemann 🇺🇸 914 93 61ms 9 Jun 2025 354th KasperKivimaeki 🇫🇮 914 93 56ms 26 Oct 2025 357th Steffan153 🇫🇮 913 81 1,360ms 94 mins ago 358th GolfingSuccess 🇬🇷 912 64 70ms 14 Dec 2024 358th MeWhenI 🇻🇦 912 64 104ms 24 Dec 2024 358th GrayJoKing 🇦🇺 912 64 93ms 25 Nov 2025 361st nai62 912 69 7ms 27 Aug 2022 362nd edsrzf 🇳🇿 912 72 128ms 3 Jul 2025 363rd marshallward 🇺🇸 912 83 40ms 10 May 2022 364th MeWhenI 🇻🇦 911 63 191ms 5 May 2022 365th sean-niemann 🇺🇸 911 75 5ms 23 Dec 2025 365th Steffan153 🇫🇮 911 75 5ms 11 Feb 2026 367th edsrzf 🇳🇿 911 83 41ms 14 Jan 2025 367th kg583 🇺🇸 911 83 42ms 14 Feb 2025 369th primo-ppcg 🇹🇭 911 93 32ms 7 May 2022 369th AlephSquirrel 911 93 29ms 21 Jan 2023 369th kg583 🇺🇸 911 93 32ms 26 Dec 2024 369th CLOStrophobic 🇮🇹 911 93 43ms 17 Jan 2025 369th edsrzf 🇳🇿 911 93 36ms 3 Jul 2025 374th Betuaredead 910 60 4ms 5 Jan 2023 374th Yewzir 🇧🇪 910 60 4ms 12 Feb 2023 374th Steffan153 🇫🇮 910 60 4ms 23 Feb 2023 374th GolfingSuccess 🇬🇷 910 60 4ms 16 Oct 2024 374th sean-niemann 🇺🇸 910 60 9ms 7 Mar 2025 379th Lydxn 🇨🇦 910 68 464ms 5 May 2022 379th GrayJoKing 🇦🇺 910 68 18ms 15 Nov 2022 379th Bubbler-4 910 68 15ms 15 Nov 2022 379th Rubiksmath 910 68 17ms 14 Aug 2023 379th Languag3 910 68 16ms 1 Mar 2026 384th Shanethegamer 🇺🇸 910 77 14ms 15 May 2023 385th ovs-code 🇩🇪 910 84 65ms 25 Sep 2022 385th GrayJoKing 🇦🇺 910 84 65ms 11 Aug 2023 385th edsrzf 🇳🇿 910 84 65ms 12 Nov 2025 385th Steffan153 🇫🇮 910 84 68ms 26 Feb 2026 389th m-tkach 🇺🇦 910 90 31ms 7 Dec 2023 390th kg583 🇺🇸 909 80 18ms 11 Mar 2026 391st Steffan153 🇫🇮 908 80 28ms 15 Nov 2022 391st error256 908 80 117ms 8 Apr 2025 393rd nipzu 907 48 56ms 8 Sep 2024 394th KrausRaus 🇺🇸 907 59 11ms 4 May 2022 394th voytxt 🇨🇿 907 59 12ms 4 May 2022 394th KingSkyrock 🇺🇸 907 59 11ms 18 May 2022 394th ZakkkkAttackkkk 🇵🇭 907 59 13ms 14 Jul 2022 394th aksyristos 907 59 12ms 28 Oct 2022 394th nstearns96 🇬🇧 907 59 13ms 28 Nov 2022 394th janbehrens 🇩🇪 907 59 13ms 17 May 2023 First Prev 321–400 of 3,788 Next Last