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 321st Lydxn 🇨🇦 913 70 143ms 7 May 2022 321st JayXon 🇺🇸 913 70 143ms 7 May 2022 323rd annaproxy 913 78 112ms 13 Jan 2023 323rd IanUtley 913 78 115ms 12 Nov 2023 323rd GrayJoKing 🇦🇺 913 78 81ms 28 Nov 2023 326th Shanethegamer 🇺🇸 913 86 461ms 15 May 2023 326th JayXon 🇺🇸 913 86 481ms 15 May 2023 326th Steffan153 🇫🇮 913 86 460ms 16 May 2023 326th Lydxn 🇨🇦 913 86 456ms 16 May 2023 326th GrayJoKing 🇦🇺 913 86 461ms 11 Aug 2023 326th sean-niemann 🇺🇸 913 86 468ms 11 Jul 2024 332nd primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 332nd sisyphus-ppcg 🇦🇺 912 61 10ms 14 Jul 2022 334th Bubbler-4 911 33 2,528ms 6 May 2022 334th rak1507 🇬🇧 911 33 108ms 8 May 2022 334th ngn 🇧🇬 911 33 25ms 11 May 2022 334th zacjl 911 33 32ms 3 Jun 2025 334th GrayJoKing 🇦🇺 911 33 13ms 4 Jun 2025 334th HPWiz 🇳🇿 911 33 9ms 16 Nov 2025 340th Steffan153 🇫🇮 911 71 110ms 14 Oct 2022 340th Shanethegamer 🇺🇸 911 71 109ms 15 Oct 2022 340th stefangimmillaro 911 71 110ms 16 Oct 2022 340th MeWhenI 🇻🇦 911 71 113ms 16 Oct 2022 340th Steffan153 🇫🇮 911 71 67ms 6 days ago 345th Lydxn 🇨🇦 911 81 39ms 1 Apr 2023 346th andersk 🇺🇸 911 91 133ms 25 Oct 2022 346th Super-Pizza 🇨🇦 911 91 120ms 4 Dec 2022 346th klixel 🇨🇦 911 91 124ms 20 May 2023 346th lynn 911 91 128ms 6 Jul 2024 346th edsrzf 🇳🇿 911 91 124ms 29 Nov 2024 346th DialFrost 🇸🇬 911 91 130ms 7 Apr 2025 346th elgan65536 🇺🇸 911 91 132ms 10 Feb 2026 346th fantaize 911 91 133ms 10 Mar 2026 346th snoozingnewt 🇨🇦 911 91 139ms 18 days ago 355th tailorspy 911 93 55ms 27 May 2024 355th sean-niemann 🇺🇸 911 93 62ms 9 Jun 2025 355th KasperKivimaeki 🇫🇮 911 93 67ms 26 Oct 2025 358th Lydxn 🇨🇦 910 47 273ms 5 May 2022 359th JayXon 🇺🇸 910 53 431ms 17 Aug 2024 360th nai62 909 68 7ms 27 Aug 2022 361st ovs-code 🇩🇪 909 75 67ms 12 Sep 2024 361st Kacarott 🇦🇺 909 75 62ms 13 Sep 2024 363rd sean-niemann 🇺🇸 908 54 136ms 6 Aug 2024 363rd Steffan153 🇫🇮 908 54 133ms 6 Aug 2024 363rd lukegustafson 🇺🇸 908 54 128ms 7 Aug 2024 363rd pardouin 🇫🇷 908 54 125ms 8 Aug 2024 363rd Lydxn 🇨🇦 908 54 134ms 9 Aug 2024 368th Shanethegamer 🇺🇸 908 61 4ms 9 Oct 2023 369th sean-niemann 🇺🇸 908 66 112ms 29 May 2025 370th GrayJoKing 🇦🇺 908 71 321ms 10 Aug 2023 371st primo-ppcg 🇹🇭 906 93 32ms 7 May 2022 371st AlephSquirrel 906 93 29ms 21 Jan 2023 371st kg583 🇺🇸 906 93 32ms 26 Dec 2024 371st CLOStrophobic 🇮🇹 906 93 43ms 17 Jan 2025 371st edsrzf 🇳🇿 906 93 36ms 3 Jul 2025 376th JayXon 🇺🇸 906 105 360ms 4 Oct 2025 377th sean-niemann 🇺🇸 905 75 5ms 23 Dec 2025 377th Steffan153 🇫🇮 905 75 5ms 11 Feb 2026 379th Steffan153 🇫🇮 905 81 1,360ms 4 days ago 380th edsrzf 🇳🇿 904 52 977ms 9 Mar 2026 381st KrausRaus 🇺🇸 904 59 11ms 4 May 2022 381st voytxt 🇨🇿 904 59 12ms 4 May 2022 381st KingSkyrock 🇺🇸 904 59 11ms 18 May 2022 381st ZakkkkAttackkkk 🇵🇭 904 59 13ms 14 Jul 2022 381st aksyristos 904 59 12ms 28 Oct 2022 381st nstearns96 🇬🇧 904 59 13ms 28 Nov 2022 381st janbehrens 🇩🇪 904 59 13ms 17 May 2023 381st Shanethegamer 🇺🇸 904 59 15ms 25 May 2023 381st Maznek 904 59 11ms 26 Jun 2023 381st SpiritAxolotl 🇺🇸 904 59 14ms 20 Mar 2024 381st Andrey-Plotnikov 904 59 13ms 19 May 2024 381st emgordon154 904 59 10ms 5 Aug 2024 381st duckyluuk 🇳🇱 904 59 12ms 3 Oct 2024 381st lifthrasiir 🇰🇷 904 59 14ms 23 Nov 2024 381st fuzzylojik-golf 🇺🇸 904 59 12ms 1 Jun 2025 381st acollett89 904 59 11ms 17 Jun 2025 381st iczelia 🇩🇪 904 59 12ms 23 Sep 2025 381st Yax42 🇫🇷 904 59 10ms 20 Jan 2026 381st Protothor 904 59 12ms 26 days ago 400th edsrzf 🇳🇿 904 72 128ms 3 Jul 2025 First Prev 321–400 of 3,744 Next Last