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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 321st annaproxy 917 79 116ms 24 Aug 2022 321st GrayJoKing 🇦🇺 917 79 85ms 28 Aug 2022 321st IanUtley 917 79 117ms 3 Nov 2023 321st Kacarott 🇦🇺 917 79 121ms 13 Jun 2024 325th arctouch-cristiannevianna 917 85 361ms 3 Apr 2023 325th tomtheisen 🇺🇸 917 85 424ms 10 Apr 2025 327th Shanethegamer 🇺🇸 917 87 461ms 15 May 2023 327th JayXon 🇺🇸 917 87 481ms 15 May 2023 327th Steffan153 🇫🇮 917 87 460ms 16 May 2023 327th Lydxn 🇨🇦 917 87 456ms 16 May 2023 327th GrayJoKing 🇦🇺 917 87 461ms 11 Aug 2023 327th sean-niemann 🇺🇸 917 87 468ms 11 Jul 2024 333rd Shanethegamer 🇺🇸 916 61 5ms 9 Oct 2023 334th Mukundan314 916 67 609ms 25 Dec 2025 335th kmathis22 916 91 370ms 20 Nov 2025 336th Natanaelel 🇸🇪 915 57 459ms 17 Jan 2024 336th Kacarott 🇦🇺 915 57 402ms 10 Sep 2024 338th ovs-code 🇩🇪 915 75 67ms 12 Sep 2024 338th Kacarott 🇦🇺 915 75 62ms 13 Sep 2024 340th Lydxn 🇨🇦 915 81 39ms 1 Apr 2023 341st andersk 🇺🇸 914 91 130ms 25 Oct 2022 341st Super-Pizza 🇨🇦 914 91 131ms 4 Dec 2022 341st klixel 🇨🇦 914 91 128ms 20 May 2023 341st lynn 914 91 139ms 6 Jul 2024 341st edsrzf 🇳🇿 914 91 134ms 29 Nov 2024 341st DialFrost 🇸🇬 914 91 130ms 7 Apr 2025 341st elgan65536 🇺🇸 914 91 131ms 10 Feb 2026 341st fantaize 914 91 123ms 5 days ago 349th lynn 913 78 1,422ms 5 May 2022 350th tailorspy 913 93 56ms 27 May 2024 350th sean-niemann 🇺🇸 913 93 59ms 9 Jun 2025 350th KasperKivimaeki 🇫🇮 913 93 62ms 26 Oct 2025 353rd nai62 912 69 7ms 27 Aug 2022 354th GrayJoKing 🇦🇺 912 71 321ms 10 Aug 2023 355th GolfingSuccess 🇬🇷 910 64 91ms 14 Dec 2024 355th MeWhenI 🇻🇦 910 64 110ms 24 Dec 2024 355th GrayJoKing 🇦🇺 910 64 99ms 25 Nov 2025 358th edsrzf 🇳🇿 910 72 128ms 3 Jul 2025 359th sean-niemann 🇺🇸 910 75 5ms 23 Dec 2025 359th Steffan153 🇫🇮 910 75 5ms 11 Feb 2026 361st Shanethegamer 🇺🇸 910 77 14ms 15 May 2023 362nd primo-ppcg 🇹🇭 910 93 30ms 7 May 2022 362nd AlephSquirrel 910 93 26ms 21 Jan 2023 362nd kg583 🇺🇸 910 93 29ms 26 Dec 2024 362nd CLOStrophobic 🇮🇹 910 93 30ms 17 Jan 2025 362nd edsrzf 🇳🇿 910 93 30ms 3 Jul 2025 367th Betuaredead 909 60 4ms 5 Jan 2023 367th Yewzir 🇧🇪 909 60 4ms 12 Feb 2023 367th Steffan153 🇫🇮 909 60 4ms 23 Feb 2023 367th GolfingSuccess 🇬🇷 909 60 4ms 16 Oct 2024 367th sean-niemann 🇺🇸 909 60 9ms 7 Mar 2025 372nd MeWhenI 🇻🇦 909 63 197ms 5 May 2022 373rd Lydxn 🇨🇦 909 68 463ms 5 May 2022 373rd GrayJoKing 🇦🇺 909 68 15ms 15 Nov 2022 373rd Bubbler-4 909 68 15ms 15 Nov 2022 373rd Rubiksmath 909 68 15ms 14 Aug 2023 373rd Languag3 909 68 16ms 15 days ago 378th marshallward 🇺🇸 909 83 40ms 10 May 2022 379th ovs-code 🇩🇪 909 84 65ms 25 Sep 2022 379th GrayJoKing 🇦🇺 909 84 65ms 11 Aug 2023 379th edsrzf 🇳🇿 909 84 65ms 12 Nov 2025 379th Steffan153 🇫🇮 909 84 68ms 17 days ago 383rd m-tkach 🇺🇦 909 90 31ms 7 Dec 2023 384th edsrzf 🇳🇿 908 83 41ms 14 Jan 2025 384th kg583 🇺🇸 908 83 42ms 14 Feb 2025 386th KrausRaus 🇺🇸 907 59 11ms 4 May 2022 386th voytxt 🇨🇿 907 59 12ms 4 May 2022 386th KingSkyrock 🇺🇸 907 59 11ms 18 May 2022 386th ZakkkkAttackkkk 🇵🇭 907 59 13ms 14 Jul 2022 386th aksyristos 907 59 11ms 28 Oct 2022 386th nstearns96 🇬🇧 907 59 11ms 28 Nov 2022 386th janbehrens 🇩🇪 907 59 10ms 17 May 2023 386th Shanethegamer 🇺🇸 907 59 12ms 25 May 2023 386th Maznek 907 59 11ms 26 Jun 2023 386th SpiritAxolotl 🇺🇸 907 59 12ms 20 Mar 2024 386th Andrey-Plotnikov 907 59 10ms 19 May 2024 386th emgordon154 907 59 16ms 5 Aug 2024 386th duckyluuk 🇳🇱 907 59 12ms 3 Oct 2024 386th lifthrasiir 🇰🇷 907 59 11ms 23 Nov 2024 386th fuzzylojik-golf 🇺🇸 907 59 13ms 1 Jun 2025 First Prev 321–400 of 3,626 Next Last