Collatz in all languages in chars. 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 Chars Time Submitted 320th IanUtley 913 78 115ms 12 Nov 2023 320th GrayJoKing 🇦🇺 913 78 81ms 28 Nov 2023 323rd Shanethegamer 🇺🇸 913 86 461ms 15 May 2023 323rd JayXon 🇺🇸 913 86 481ms 15 May 2023 323rd Steffan153 🇫🇮 913 86 460ms 16 May 2023 323rd Lydxn 🇨🇦 913 86 456ms 16 May 2023 323rd GrayJoKing 🇦🇺 913 86 461ms 11 Aug 2023 323rd sean-niemann 🇺🇸 913 86 468ms 11 Jul 2024 329th primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 329th sisyphus-ppcg 🇦🇺 912 61 10ms 14 Jul 2022 331st Lydxn 🇨🇦 912 70 143ms 7 May 2022 331st JayXon 🇺🇸 912 70 143ms 7 May 2022 333rd Bubbler-4 911 33 2,528ms 6 May 2022 333rd rak1507 🇬🇧 911 33 108ms 8 May 2022 333rd ngn 🇧🇬 911 33 25ms 11 May 2022 333rd zacjl 911 33 32ms 3 Jun 2025 333rd GrayJoKing 🇦🇺 911 33 13ms 4 Jun 2025 333rd HPWiz 🇳🇿 911 33 9ms 16 Nov 2025 339th Steffan153 🇫🇮 911 71 114ms 14 Oct 2022 339th Shanethegamer 🇺🇸 911 71 109ms 15 Oct 2022 339th stefangimmillaro 911 71 110ms 16 Oct 2022 339th MeWhenI 🇻🇦 911 71 113ms 16 Oct 2022 343rd Lydxn 🇨🇦 911 81 39ms 1 Apr 2023 344th andersk 🇺🇸 911 91 133ms 25 Oct 2022 344th Super-Pizza 🇨🇦 911 91 132ms 4 Dec 2022 344th klixel 🇨🇦 911 91 124ms 20 May 2023 344th lynn 911 91 129ms 6 Jul 2024 344th edsrzf 🇳🇿 911 91 127ms 29 Nov 2024 344th DialFrost 🇸🇬 911 91 132ms 7 Apr 2025 344th elgan65536 🇺🇸 911 91 132ms 10 Feb 2026 344th fantaize 911 91 133ms 10 Mar 2026 344th snoozingnewt 🇨🇦 911 91 139ms 15 days ago 353rd tailorspy 911 93 58ms 27 May 2024 353rd sean-niemann 🇺🇸 911 93 61ms 9 Jun 2025 353rd KasperKivimaeki 🇫🇮 911 93 56ms 26 Oct 2025 356th Lydxn 🇨🇦 910 47 273ms 5 May 2022 357th JayXon 🇺🇸 910 53 431ms 17 Aug 2024 358th Steffan153 🇫🇮 910 71 67ms 4 days ago 359th ovs-code 🇩🇪 909 75 67ms 12 Sep 2024 359th Kacarott 🇦🇺 909 75 62ms 13 Sep 2024 361st sean-niemann 🇺🇸 908 54 150ms 6 Aug 2024 361st Steffan153 🇫🇮 908 54 133ms 6 Aug 2024 361st lukegustafson 🇺🇸 908 54 128ms 7 Aug 2024 361st pardouin 🇫🇷 908 54 125ms 8 Aug 2024 361st Lydxn 🇨🇦 908 54 134ms 9 Aug 2024 366th Shanethegamer 🇺🇸 908 61 4ms 9 Oct 2023 367th sean-niemann 🇺🇸 908 66 112ms 29 May 2025 368th nai62 908 68 7ms 27 Aug 2022 369th GrayJoKing 🇦🇺 908 71 321ms 10 Aug 2023 370th primo-ppcg 🇹🇭 906 93 32ms 7 May 2022 370th AlephSquirrel 906 93 29ms 21 Jan 2023 370th kg583 🇺🇸 906 93 32ms 26 Dec 2024 370th CLOStrophobic 🇮🇹 906 93 43ms 17 Jan 2025 370th edsrzf 🇳🇿 906 93 36ms 3 Jul 2025 375th JayXon 🇺🇸 906 105 360ms 4 Oct 2025 376th sean-niemann 🇺🇸 905 75 5ms 23 Dec 2025 376th Steffan153 🇫🇮 905 75 5ms 11 Feb 2026 378th Steffan153 🇫🇮 905 81 1,360ms 2 days ago 379th edsrzf 🇳🇿 904 52 977ms 9 Mar 2026 380th KrausRaus 🇺🇸 904 59 11ms 4 May 2022 380th voytxt 🇨🇿 904 59 12ms 4 May 2022 380th KingSkyrock 🇺🇸 904 59 11ms 18 May 2022 380th ZakkkkAttackkkk 🇵🇭 904 59 13ms 14 Jul 2022 380th aksyristos 904 59 12ms 28 Oct 2022 380th nstearns96 🇬🇧 904 59 13ms 28 Nov 2022 380th janbehrens 🇩🇪 904 59 13ms 17 May 2023 380th Shanethegamer 🇺🇸 904 59 15ms 25 May 2023 380th Maznek 904 59 11ms 26 Jun 2023 380th SpiritAxolotl 🇺🇸 904 59 14ms 20 Mar 2024 380th Andrey-Plotnikov 904 59 13ms 19 May 2024 380th emgordon154 904 59 10ms 5 Aug 2024 380th duckyluuk 🇳🇱 904 59 12ms 3 Oct 2024 380th lifthrasiir 🇰🇷 904 59 14ms 23 Nov 2024 380th fuzzylojik-golf 🇺🇸 904 59 12ms 1 Jun 2025 380th acollett89 904 59 11ms 17 Jun 2025 380th iczelia 🇩🇪 904 59 12ms 23 Sep 2025 380th Yax42 🇫🇷 904 59 10ms 20 Jan 2026 380th Protothor 904 59 12ms 24 days ago 399th edsrzf 🇳🇿 904 72 128ms 3 Jul 2025 400th Shanethegamer 🇺🇸 904 77 14ms 15 May 2023 First Prev 321–400 of 3,732 Next Last