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 480th Lydxn 🇨🇦 894 67 118ms 4 Feb 2023 480th DialFrost 🇸🇬 894 67 98ms 17 Mar 2025 483rd GrayJoKing 🇦🇺 894 91 30ms 19 Jan 2023 484th m-tkach 🇺🇦 894 117 25ms 7 May 2022 484th Lydxn 🇨🇦 894 117 26ms 7 May 2022 486th SirBogman 🇺🇸 893 50 406ms 5 May 2022 486th nwellnhof 🇩🇪 893 50 405ms 3 Jun 2022 486th Lydxn 🇨🇦 893 50 484ms 15 Aug 2022 486th Steffan153 🇫🇮 893 50 555ms 9 Aug 2024 490th NickTheEASDude 🇺🇸 893 76 6ms 7 May 2024 490th edsrzf 🇳🇿 893 76 6ms 23 Dec 2025 490th Shanethegamer 🇺🇸 893 76 5ms 23 Dec 2025 490th jared-hughes 893 76 5ms 24 Dec 2025 490th Waffle3z 893 76 5ms 26 Dec 2025 490th Blendi-Goose 893 76 5ms 6 Feb 2026 490th kTheLemon 893 76 5ms 7 Mar 2026 497th edsrzf 🇳🇿 893 78 12ms 26 Oct 2024 498th MichalMarsalek 🇨🇿 893 87 439ms 5 May 2022 498th Kloppermand 🇩🇰 893 87 445ms 7 Oct 2022 498th bwat2 893 87 385ms 6 Apr 2023 498th bpharaldsson 893 87 442ms 9 Feb 2026 502nd Ripick 892 73 122ms 8 May 2023 503rd edsrzf 🇳🇿 892 78 18ms 16 Aug 2025 504th dokutan 892 88 425ms 15 Feb 2026 505th GolfingSuccess 🇬🇷 892 95 62ms 5 May 2022 505th Alex-x90 🇺🇸 892 95 64ms 4 Dec 2022 505th Mandrzejy 🇵🇱 892 95 59ms 22 Mar 2024 505th roupiq 🇵🇱 892 95 62ms 3 days ago 509th p-zubieta 891 48 295ms 6 Mar 2024 510th JayXon 🇺🇸 891 74 2,363ms 14 Nov 2024 511th Steffan153 🇫🇮 891 80 28ms 15 Nov 2022 511th error256 891 80 117ms 8 Apr 2025 513th oeb25 891 93 129ms 16 May 2022 513th snobee 🇨🇦 891 93 130ms 8 Dec 2022 513th logvp 891 93 127ms 2 Jan 2024 513th smartiel 891 93 128ms 12 Aug 2024 513th trist224 🇫🇷 891 93 125ms 12 Aug 2024 513th nullie 891 93 134ms 19 Dec 2024 513th lolgeny 891 93 137ms 22 Feb 2025 520th canissimia 🇦🇶 890 110 2,640ms 20 Feb 2023 521st jared-hughes 890 130 22ms 15 Dec 2024 522nd canissimia 🇦🇶 890 204 16ms 25 Nov 2023 523rd KatieLG 🇬🇧 889 60 13ms 4 May 2022 523rd ScottHamper 889 60 14ms 5 May 2022 523rd Re-Adventures 🇮🇳 889 60 13ms 5 May 2022 523rd 0x24a537r9 889 60 11ms 29 Jul 2022 523rd stefangabos 🇷🇴 889 60 14ms 19 Aug 2022 523rd eranws 889 60 13ms 10 Sep 2022 523rd GeorgeStechman 🇬🇧 889 60 13ms 26 Sep 2022 523rd BloodStormKnight 889 60 11ms 15 Oct 2022 523rd dzshn 889 60 12ms 3 Dec 2022 523rd biocommando 🇫🇮 889 60 10ms 20 Dec 2022 523rd Betuaredead 889 60 11ms 5 Jan 2023 523rd piano-miles 889 60 11ms 16 Jan 2023 523rd Yewzir 🇧🇪 889 60 14ms 12 Feb 2023 523rd shellbertt 🇨🇦 889 60 15ms 26 Feb 2023 523rd zakariamouhid 889 60 12ms 20 May 2023 523rd raphaelimahorn 889 60 13ms 23 Aug 2023 523rd jbt 889 60 12ms 25 Dec 2023 523rd olleicua 🇺🇸 889 60 12ms 15 Feb 2024 523rd HumanoidCPU 889 60 13ms 3 May 2024 523rd dokutan 889 60 11ms 13 Aug 2024 523rd LostSyntax21 🇬🇧 889 60 15ms 10 Sep 2024 523rd xyangst 889 60 11ms 28 Sep 2024 523rd a6166231 🇨🇳 889 60 11ms 15 May 2025 523rd SebassNoob 889 60 11ms 5 Aug 2025 523rd levinwinter 889 60 11ms 22 Oct 2025 523rd Cube14yt 889 60 11ms 16 Nov 2025 523rd gigaprofisi 🇺🇸 889 60 10ms 17 Nov 2025 523rd amazingalek 🇳🇴 889 60 13ms 20 Dec 2025 523rd shandriy 889 60 11ms 23 Jan 2026 523rd spidunno 889 60 13ms 17 Feb 2026 553rd Lydxn 🇨🇦 889 107 322ms 6 May 2022 553rd CaedenHarper 🇨🇦 889 107 346ms 5 Oct 2025 555th Shanethegamer 🇺🇸 888 61 4ms 31 Oct 2022 555th MeWhenI 🇻🇦 888 61 4ms 4 Nov 2022 557th P-Quentin 🇫🇷 888 63 21ms 3 Aug 2022 557th kaptsanovb 888 63 29ms 20 Apr 2023 557th fkantelberg 888 63 20ms 14 Jul 2023 557th VictorStenvers 🇳🇱 888 63 27ms 13 Nov 2023 First Prev 481–560 of 3,744 Next Last