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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ArkScript 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 ><> 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 Lydxn 🇨🇦 892 72 353ms 16 Jul 2023 482nd NickTheEASDude 🇺🇸 892 76 6ms 7 May 2024 482nd edsrzf 🇳🇿 892 76 6ms 23 Dec 2025 482nd Shanethegamer 🇺🇸 892 76 5ms 23 Dec 2025 482nd jared-hughes 892 76 5ms 24 Dec 2025 482nd Waffle3z 892 76 5ms 26 Dec 2025 482nd Blendi-Goose 892 76 5ms 4 days ago 488th edsrzf 🇳🇿 892 78 11ms 26 Oct 2024 488th kg583 🇺🇸 892 78 11ms 25 Sep 2025 490th MichalMarsalek 🇨🇿 892 87 436ms 5 May 2022 490th Kloppermand 🇩🇰 892 87 414ms 7 Oct 2022 490th bwat2 892 87 397ms 6 Apr 2023 490th bpharaldsson 892 87 366ms 38 hours ago 494th Ripick 891 73 133ms 8 May 2023 495th oeb25 891 93 121ms 16 May 2022 495th snobee 🇨🇦 891 93 126ms 8 Dec 2022 495th logvp 891 93 121ms 2 Jan 2024 495th smartiel 891 93 127ms 12 Aug 2024 495th trist224 🇫🇷 891 93 121ms 12 Aug 2024 495th nullie 891 93 125ms 19 Dec 2024 495th lolgeny 891 93 121ms 22 Feb 2025 502nd GolfingSuccess 🇬🇷 891 95 57ms 5 May 2022 502nd Alex-x90 🇺🇸 891 95 57ms 4 Dec 2022 502nd Mandrzejy 🇵🇱 891 95 53ms 22 Mar 2024 505th m-tkach 🇺🇦 891 117 25ms 7 May 2022 505th Lydxn 🇨🇦 891 117 26ms 7 May 2022 507th p-zubieta 890 48 299ms 6 Mar 2024 508th Steffan153 🇫🇮 890 80 25ms 11 Dec 2023 509th KatieLG 🇬🇧 889 60 10ms 4 May 2022 509th ScottHamper 889 60 11ms 5 May 2022 509th Re-Adventures 🇮🇳 889 60 10ms 5 May 2022 509th 0x24a537r9 889 60 10ms 29 Jul 2022 509th stefangabos 🇷🇴 889 60 10ms 19 Aug 2022 509th eranws 889 60 11ms 10 Sep 2022 509th GeorgeStechman 🇬🇧 889 60 10ms 26 Sep 2022 509th BloodStormKnight 889 60 11ms 15 Oct 2022 509th dzshn 889 60 11ms 3 Dec 2022 509th biocommando 🇫🇮 889 60 15ms 20 Dec 2022 509th Betuaredead 889 60 12ms 5 Jan 2023 509th piano-miles 889 60 10ms 16 Jan 2023 509th Yewzir 🇧🇪 889 60 9ms 12 Feb 2023 509th shellbertt 🇨🇦 889 60 10ms 26 Feb 2023 509th zakariamouhid 889 60 9ms 20 May 2023 509th raphaelimahorn 889 60 11ms 23 Aug 2023 509th jbt 889 60 11ms 25 Dec 2023 509th olleicua 🇺🇸 889 60 10ms 15 Feb 2024 509th HumanoidCPU 889 60 11ms 3 May 2024 509th dokutan 889 60 10ms 13 Aug 2024 509th LostSyntax21 🇬🇧 889 60 11ms 10 Sep 2024 509th xyangst 889 60 14ms 28 Sep 2024 509th a6166231 🇨🇳 889 60 11ms 15 May 2025 509th Protothor 889 60 10ms 8 Jul 2025 509th SebassNoob 889 60 12ms 5 Aug 2025 509th levinwinter 889 60 10ms 22 Oct 2025 509th Cube14yt 889 60 11ms 16 Nov 2025 509th gigaprofisi 🇺🇸 889 60 10ms 17 Nov 2025 509th amazingalek 🇳🇴 889 60 11ms 20 Dec 2025 509th shandriy 889 60 9ms 18 days ago 539th Steffan153 🇫🇮 889 80 26ms 15 Nov 2022 539th error256 889 80 115ms 8 Apr 2025 541st Lydxn 🇨🇦 888 107 297ms 6 May 2022 541st CaedenHarper 🇨🇦 888 107 288ms 5 Oct 2025 543rd canissimia 🇦🇶 888 204 16ms 25 Nov 2023 544th Shanethegamer 🇺🇸 887 61 5ms 31 Oct 2022 544th MeWhenI 🇻🇦 887 61 5ms 4 Nov 2022 546th P-Quentin 🇫🇷 887 63 20ms 3 Aug 2022 546th kaptsanovb 887 63 28ms 20 Apr 2023 546th fkantelberg 887 63 19ms 14 Jul 2023 546th VictorStenvers 🇳🇱 887 63 22ms 13 Nov 2023 546th 1231234md5 🇨🇳 887 63 20ms 14 Dec 2023 546th f-tucker 887 63 23ms 6 Feb 2024 546th JunkIce 887 63 24ms 24 Nov 2024 546th Kowalskiexe 🇵🇱 887 63 19ms 19 Apr 2025 546th 123mjb 887 63 24ms 2 Jun 2025 546th DrakeSeteraO 887 63 52ms 24 Oct 2025 546th enigma 887 63 34ms 21 Dec 2025 557th JayXon 🇺🇸 887 74 2,178ms 14 Nov 2024 558th jared-hughes 887 130 23ms 15 Dec 2024 559th lynn 886 65 283ms 5 May 2022 559th GrayJoKing 🇦🇺 886 65 250ms 5 May 2022 First Prev 481–560 of 3,549 Next Last