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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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 481st GrayJoKing 🇦🇺 892 91 29ms 19 Jan 2023 482nd Ripick 891 73 133ms 8 May 2023 483rd oeb25 891 93 120ms 16 May 2022 483rd snobee 🇨🇦 891 93 119ms 8 Dec 2022 483rd logvp 891 93 120ms 2 Jan 2024 483rd elgan65536 891 93 120ms 5 Mar 2024 483rd smartiel 891 93 124ms 12 Aug 2024 483rd trist224 🇫🇷 891 93 122ms 12 Aug 2024 483rd nullie 891 93 119ms 19 Dec 2024 483rd lolgeny 891 93 116ms 22 Feb 2025 491st p-zubieta 890 48 273ms 6 Mar 2024 492nd Steffan153 🇫🇮 890 80 24ms 11 Dec 2023 493rd GolfingSuccess 🇬🇷 890 95 63ms 5 May 2022 493rd Alex-x90 🇺🇸 890 95 57ms 4 Dec 2022 493rd Mandrzejy 🇵🇱 890 95 56ms 22 Mar 2024 496th m-tkach 🇺🇦 890 117 25ms 7 May 2022 496th Lydxn 🇨🇦 890 117 26ms 7 May 2022 498th Steffan153 🇫🇮 889 80 26ms 15 Nov 2022 498th error256 889 80 115ms 8 Apr 2025 500th KatieLG 🇬🇧 888 60 10ms 4 May 2022 500th ScottHamper 888 60 10ms 5 May 2022 500th Re-Adventures 🇮🇳 888 60 10ms 5 May 2022 500th 0x24a537r9 888 60 10ms 29 Jul 2022 500th stefangabos 🇷🇴 888 60 10ms 19 Aug 2022 500th eranws 888 60 10ms 10 Sep 2022 500th GeorgeStechman 🇬🇧 888 60 10ms 26 Sep 2022 500th BloodStormKnight 888 60 10ms 15 Oct 2022 500th dzshn 888 60 10ms 3 Dec 2022 500th biocommando 🇫🇮 888 60 10ms 20 Dec 2022 500th Betuaredead 888 60 9ms 5 Jan 2023 500th piano-miles 888 60 9ms 16 Jan 2023 500th Yewzir 🇧🇪 888 60 10ms 12 Feb 2023 500th shellbertt 🇨🇦 888 60 10ms 26 Feb 2023 500th zakariamouhid 888 60 10ms 20 May 2023 500th raphaelimahorn 888 60 10ms 23 Aug 2023 500th jbt 888 60 9ms 25 Dec 2023 500th olleicua 🇺🇸 888 60 10ms 15 Feb 2024 500th HumanoidCPU 888 60 10ms 3 May 2024 500th dokutan 888 60 10ms 13 Aug 2024 500th LostSyntax21 🇬🇧 888 60 11ms 10 Sep 2024 500th xyangst 888 60 10ms 28 Sep 2024 500th a6166231 🇨🇳 888 60 9ms 15 May 2025 500th Protothor 888 60 10ms 8 Jul 2025 500th SebassNoob 888 60 10ms 5 Aug 2025 500th Yax42 🇫🇷 888 60 10ms 5 Sep 2025 500th levinwinter 888 60 10ms 22 Oct 2025 500th Cube14yt 888 60 10ms 16 Nov 2025 500th gigaprofisi 🇺🇸 888 60 10ms 17 Nov 2025 500th amazingalek 888 60 12ms 7 days ago 530th NickTheEASDude 🇺🇸 888 76 6ms 7 May 2024 530th edsrzf 🇳🇿 888 76 6ms 4 days ago 530th Shanethegamer 🇺🇸 888 76 5ms 4 days ago 530th jared-hughes 888 76 5ms 3 days ago 530th Waffle3z 888 76 6ms 26 hours ago 535th Lydxn 🇨🇦 888 107 263ms 6 May 2022 535th CaedenHarper 🇨🇦 888 107 308ms 5 Oct 2025 537th Shanethegamer 🇺🇸 887 61 5ms 31 Oct 2022 537th MeWhenI 🇻🇦 887 61 5ms 4 Nov 2022 539th P-Quentin 🇫🇷 887 63 18ms 3 Aug 2022 539th kaptsanovb 887 63 28ms 20 Apr 2023 539th fkantelberg 887 63 20ms 14 Jul 2023 539th VictorStenvers 🇳🇱 887 63 22ms 13 Nov 2023 539th 1231234md5 🇨🇳 887 63 18ms 14 Dec 2023 539th f-tucker 887 63 23ms 6 Feb 2024 539th JunkIce 887 63 23ms 24 Nov 2024 539th Kowalskiexe 🇵🇱 887 63 19ms 19 Apr 2025 539th 123mjb 887 63 23ms 2 Jun 2025 539th DrakeSeteraO 887 63 52ms 24 Oct 2025 539th enigma 887 63 36ms 6 days ago 550th JayXon 🇺🇸 887 74 3,375ms 14 Nov 2024 551st jared-hughes 887 130 23ms 15 Dec 2024 552nd canissimia 🇦🇶 887 204 16ms 25 Nov 2023 553rd lynn 886 65 283ms 5 May 2022 553rd GrayJoKing 🇦🇺 886 65 250ms 5 May 2022 553rd Sakisan 🇧🇪 886 65 178ms 6 May 2022 553rd JayXon 🇺🇸 886 65 311ms 17 Oct 2022 553rd Steffan153 🇫🇮 886 65 185ms 12 Nov 2022 553rd tobeannouncd 886 65 312ms 25 Apr 2025 553rd sean-niemann 🇺🇸 886 65 168ms 9 Jun 2025 560th stefangimmillaro 886 71 89ms 2 Oct 2022 First Prev 481–560 of 3,486 Next Last