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 320th GrayJoKing 🇦🇺 917 79 85ms 28 Aug 2022 320th IanUtley 917 79 117ms 3 Nov 2023 320th Kacarott 🇦🇺 917 79 121ms 13 Jun 2024 324th arctouch-cristiannevianna 917 85 361ms 3 Apr 2023 324th tomtheisen 🇺🇸 917 85 424ms 10 Apr 2025 326th Shanethegamer 🇺🇸 917 87 461ms 15 May 2023 326th JayXon 🇺🇸 917 87 481ms 15 May 2023 326th Steffan153 🇫🇮 917 87 460ms 16 May 2023 326th Lydxn 🇨🇦 917 87 456ms 16 May 2023 326th GrayJoKing 🇦🇺 917 87 461ms 11 Aug 2023 326th sean-niemann 🇺🇸 917 87 468ms 11 Jul 2024 332nd Shanethegamer 🇺🇸 916 61 5ms 9 Oct 2023 333rd Mukundan314 916 67 609ms 25 Dec 2025 334th kmathis22 916 91 370ms 20 Nov 2025 335th Natanaelel 🇸🇪 915 57 459ms 17 Jan 2024 335th Kacarott 🇦🇺 915 57 402ms 10 Sep 2024 337th ovs-code 🇩🇪 915 75 67ms 12 Sep 2024 337th Kacarott 🇦🇺 915 75 62ms 13 Sep 2024 339th Lydxn 🇨🇦 915 81 39ms 1 Apr 2023 340th andersk 🇺🇸 914 91 130ms 25 Oct 2022 340th Super-Pizza 🇨🇦 914 91 131ms 4 Dec 2022 340th klixel 🇨🇦 914 91 128ms 20 May 2023 340th lynn 914 91 139ms 6 Jul 2024 340th edsrzf 🇳🇿 914 91 134ms 29 Nov 2024 340th DialFrost 🇸🇬 914 91 130ms 7 Apr 2025 340th elgan65536 🇺🇸 914 91 131ms 10 Feb 2026 340th fantaize 914 91 123ms 5 days ago 348th lynn 913 78 1,422ms 5 May 2022 349th tailorspy 913 93 56ms 27 May 2024 349th sean-niemann 🇺🇸 913 93 59ms 9 Jun 2025 349th KasperKivimaeki 🇫🇮 913 93 62ms 26 Oct 2025 352nd nai62 912 69 7ms 27 Aug 2022 353rd GrayJoKing 🇦🇺 912 71 321ms 10 Aug 2023 354th GolfingSuccess 🇬🇷 910 64 91ms 14 Dec 2024 354th MeWhenI 🇻🇦 910 64 110ms 24 Dec 2024 354th GrayJoKing 🇦🇺 910 64 99ms 25 Nov 2025 357th edsrzf 🇳🇿 910 72 128ms 3 Jul 2025 358th sean-niemann 🇺🇸 910 75 5ms 23 Dec 2025 358th Steffan153 🇫🇮 910 75 5ms 11 Feb 2026 360th Shanethegamer 🇺🇸 910 77 14ms 15 May 2023 361st primo-ppcg 🇹🇭 910 93 30ms 7 May 2022 361st AlephSquirrel 910 93 26ms 21 Jan 2023 361st kg583 🇺🇸 910 93 29ms 26 Dec 2024 361st CLOStrophobic 🇮🇹 910 93 30ms 17 Jan 2025 361st edsrzf 🇳🇿 910 93 30ms 3 Jul 2025 366th Betuaredead 909 60 4ms 5 Jan 2023 366th Yewzir 🇧🇪 909 60 4ms 12 Feb 2023 366th Steffan153 🇫🇮 909 60 4ms 23 Feb 2023 366th GolfingSuccess 🇬🇷 909 60 4ms 16 Oct 2024 366th sean-niemann 🇺🇸 909 60 9ms 7 Mar 2025 371st MeWhenI 🇻🇦 909 63 197ms 5 May 2022 372nd Lydxn 🇨🇦 909 68 463ms 5 May 2022 372nd GrayJoKing 🇦🇺 909 68 15ms 15 Nov 2022 372nd Bubbler-4 909 68 15ms 15 Nov 2022 372nd Rubiksmath 909 68 15ms 14 Aug 2023 372nd Languag3 909 68 16ms 14 days ago 377th marshallward 🇺🇸 909 83 40ms 10 May 2022 378th ovs-code 🇩🇪 909 84 65ms 25 Sep 2022 378th GrayJoKing 🇦🇺 909 84 65ms 11 Aug 2023 378th edsrzf 🇳🇿 909 84 65ms 12 Nov 2025 378th Steffan153 🇫🇮 909 84 68ms 17 days ago 382nd m-tkach 🇺🇦 909 90 31ms 7 Dec 2023 383rd edsrzf 🇳🇿 908 83 41ms 14 Jan 2025 383rd kg583 🇺🇸 908 83 42ms 14 Feb 2025 385th KrausRaus 🇺🇸 907 59 11ms 4 May 2022 385th voytxt 🇨🇿 907 59 12ms 4 May 2022 385th KingSkyrock 🇺🇸 907 59 11ms 18 May 2022 385th ZakkkkAttackkkk 🇵🇭 907 59 13ms 14 Jul 2022 385th aksyristos 907 59 11ms 28 Oct 2022 385th nstearns96 🇬🇧 907 59 11ms 28 Nov 2022 385th janbehrens 🇩🇪 907 59 10ms 17 May 2023 385th Shanethegamer 🇺🇸 907 59 12ms 25 May 2023 385th Maznek 907 59 11ms 26 Jun 2023 385th SpiritAxolotl 🇺🇸 907 59 12ms 20 Mar 2024 385th Andrey-Plotnikov 907 59 10ms 19 May 2024 385th emgordon154 907 59 16ms 5 Aug 2024 385th duckyluuk 🇳🇱 907 59 12ms 3 Oct 2024 385th lifthrasiir 🇰🇷 907 59 11ms 23 Nov 2024 385th fuzzylojik-golf 🇺🇸 907 59 13ms 1 Jun 2025 385th acollett89 907 59 13ms 17 Jun 2025 First Prev 321–400 of 3,626 Next Last