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 319th Steffan153 🇫🇮 914 86 460ms 16 May 2023 319th Lydxn 🇨🇦 914 86 456ms 16 May 2023 319th GrayJoKing 🇦🇺 914 86 461ms 11 Aug 2023 319th sean-niemann 🇺🇸 914 86 468ms 11 Jul 2024 325th kmathis22 914 91 370ms 20 Nov 2025 326th primo-ppcg 🇹🇭 913 61 7ms 6 May 2022 326th sisyphus-ppcg 🇦🇺 913 61 10ms 14 Jul 2022 328th annaproxy 913 78 112ms 13 Jan 2023 328th IanUtley 913 78 115ms 12 Nov 2023 328th GrayJoKing 🇦🇺 913 78 81ms 28 Nov 2023 331st Lydxn 🇨🇦 912 70 143ms 7 May 2022 331st JayXon 🇺🇸 912 70 143ms 7 May 2022 333rd Steffan153 🇫🇮 912 71 114ms 14 Oct 2022 333rd Shanethegamer 🇺🇸 912 71 109ms 15 Oct 2022 333rd stefangimmillaro 912 71 110ms 16 Oct 2022 333rd MeWhenI 🇻🇦 912 71 113ms 16 Oct 2022 337th Bubbler-4 911 33 2,528ms 6 May 2022 337th rak1507 🇬🇧 911 33 108ms 8 May 2022 337th ngn 🇧🇬 911 33 25ms 11 May 2022 337th zacjl 911 33 32ms 3 Jun 2025 337th GrayJoKing 🇦🇺 911 33 13ms 4 Jun 2025 337th HPWiz 🇳🇿 911 33 9ms 16 Nov 2025 343rd Lydxn 🇨🇦 911 81 39ms 1 Apr 2023 344th andersk 🇺🇸 911 91 134ms 25 Oct 2022 344th Super-Pizza 🇨🇦 911 91 132ms 4 Dec 2022 344th klixel 🇨🇦 911 91 124ms 20 May 2023 344th lynn 911 91 131ms 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 14 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 2 days ago 359th sean-niemann 🇺🇸 909 66 112ms 29 May 2025 360th ovs-code 🇩🇪 909 75 67ms 12 Sep 2024 360th Kacarott 🇦🇺 909 75 62ms 13 Sep 2024 362nd sean-niemann 🇺🇸 908 54 150ms 6 Aug 2024 362nd Steffan153 🇫🇮 908 54 133ms 6 Aug 2024 362nd lukegustafson 🇺🇸 908 54 128ms 7 Aug 2024 362nd pardouin 🇫🇷 908 54 134ms 8 Aug 2024 362nd Lydxn 🇨🇦 908 54 134ms 9 Aug 2024 367th Shanethegamer 🇺🇸 908 61 4ms 9 Oct 2023 368th nai62 908 68 7ms 27 Aug 2022 369th GrayJoKing 🇦🇺 908 71 321ms 10 Aug 2023 370th Steffan153 🇫🇮 907 81 1,360ms 8 hours ago 371st sean-niemann 🇺🇸 906 75 5ms 23 Dec 2025 371st Steffan153 🇫🇮 906 75 5ms 11 Feb 2026 373rd marshallward 🇺🇸 906 83 40ms 10 May 2022 374th primo-ppcg 🇹🇭 906 93 32ms 7 May 2022 374th AlephSquirrel 906 93 29ms 21 Jan 2023 374th kg583 🇺🇸 906 93 32ms 26 Dec 2024 374th CLOStrophobic 🇮🇹 906 93 43ms 17 Jan 2025 374th edsrzf 🇳🇿 906 93 36ms 3 Jul 2025 379th JayXon 🇺🇸 906 105 360ms 4 Oct 2025 380th edsrzf 🇳🇿 905 52 977ms 9 Mar 2026 381st edsrzf 🇳🇿 905 72 128ms 3 Jul 2025 382nd KrausRaus 🇺🇸 904 59 11ms 4 May 2022 382nd voytxt 🇨🇿 904 59 12ms 4 May 2022 382nd KingSkyrock 🇺🇸 904 59 11ms 18 May 2022 382nd ZakkkkAttackkkk 🇵🇭 904 59 13ms 14 Jul 2022 382nd aksyristos 904 59 12ms 28 Oct 2022 382nd nstearns96 🇬🇧 904 59 13ms 28 Nov 2022 382nd janbehrens 🇩🇪 904 59 13ms 17 May 2023 382nd Shanethegamer 🇺🇸 904 59 15ms 25 May 2023 382nd Maznek 904 59 11ms 26 Jun 2023 382nd SpiritAxolotl 🇺🇸 904 59 14ms 20 Mar 2024 382nd Andrey-Plotnikov 904 59 13ms 19 May 2024 382nd emgordon154 904 59 10ms 5 Aug 2024 382nd duckyluuk 🇳🇱 904 59 12ms 3 Oct 2024 382nd lifthrasiir 🇰🇷 904 59 14ms 23 Nov 2024 382nd fuzzylojik-golf 🇺🇸 904 59 12ms 1 Jun 2025 382nd acollett89 904 59 11ms 17 Jun 2025 382nd iczelia 🇩🇪 904 59 12ms 23 Sep 2025 382nd Yax42 🇫🇷 904 59 10ms 20 Jan 2026 382nd Protothor 904 59 12ms 22 days ago First Prev 321–400 of 3,763 Next Last