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 Dragon Curve 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 Dragon Curve 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 481st Lydxn 🇨🇦 895 72 353ms 16 Jul 2023 482nd Steffan153 🇫🇮 894 67 110ms 18 Dec 2022 482nd Lydxn 🇨🇦 894 67 118ms 4 Feb 2023 482nd DialFrost 🇸🇬 894 67 98ms 17 Mar 2025 485th NickTheEASDude 🇺🇸 894 76 6ms 7 May 2024 485th edsrzf 🇳🇿 894 76 6ms 23 Dec 2025 485th Shanethegamer 🇺🇸 894 76 5ms 23 Dec 2025 485th jared-hughes 894 76 5ms 24 Dec 2025 485th Waffle3z 894 76 5ms 26 Dec 2025 485th Blendi-Goose 894 76 5ms 6 Feb 2026 485th kTheLemon 894 76 5ms 7 Mar 2026 492nd GrayJoKing 🇦🇺 894 91 30ms 19 Jan 2023 493rd m-tkach 🇺🇦 894 117 25ms 7 May 2022 493rd Lydxn 🇨🇦 894 117 26ms 7 May 2022 495th SirBogman 🇺🇸 893 50 408ms 5 May 2022 495th nwellnhof 🇩🇪 893 50 398ms 3 Jun 2022 495th Lydxn 🇨🇦 893 50 515ms 15 Aug 2022 495th Steffan153 🇫🇮 893 50 455ms 9 Aug 2024 499th edsrzf 🇳🇿 893 78 12ms 26 Oct 2024 500th MichalMarsalek 🇨🇿 893 87 443ms 5 May 2022 500th Kloppermand 🇩🇰 893 87 436ms 7 Oct 2022 500th bwat2 893 87 464ms 6 Apr 2023 500th bpharaldsson 893 87 397ms 9 Feb 2026 504th Ripick 892 73 181ms 8 May 2023 505th edsrzf 🇳🇿 892 78 17ms 16 Aug 2025 506th dokutan 892 88 425ms 15 Feb 2026 507th GolfingSuccess 🇬🇷 892 95 61ms 5 May 2022 507th Alex-x90 🇺🇸 892 95 64ms 4 Dec 2022 507th Mandrzejy 🇵🇱 892 95 59ms 22 Mar 2024 507th roupiq 🇵🇱 892 95 61ms 5 days ago 511th p-zubieta 891 48 295ms 6 Mar 2024 512th JayXon 🇺🇸 891 74 2,567ms 43 hours ago 513th Steffan153 🇫🇮 891 80 28ms 15 Nov 2022 513th error256 891 80 117ms 8 Apr 2025 515th oeb25 891 93 129ms 16 May 2022 515th snobee 🇨🇦 891 93 130ms 8 Dec 2022 515th logvp 891 93 127ms 2 Jan 2024 515th smartiel 891 93 128ms 12 Aug 2024 515th trist224 🇫🇷 891 93 125ms 12 Aug 2024 515th nullie 891 93 134ms 19 Dec 2024 515th lolgeny 891 93 135ms 22 Feb 2025 522nd canissimia 🇦🇶 890 110 3,055ms 20 Feb 2023 523rd jared-hughes 890 130 22ms 15 Dec 2024 524th canissimia 🇦🇶 890 204 16ms 25 Nov 2023 525th KatieLG 🇬🇧 889 60 11ms 4 May 2022 525th ScottHamper 889 60 13ms 5 May 2022 525th Re-Adventures 🇮🇳 889 60 13ms 5 May 2022 525th 0x24a537r9 889 60 13ms 29 Jul 2022 525th stefangabos 🇷🇴 889 60 12ms 19 Aug 2022 525th eranws 889 60 11ms 10 Sep 2022 525th GeorgeStechman 🇬🇧 889 60 12ms 26 Sep 2022 525th BloodStormKnight 889 60 15ms 15 Oct 2022 525th dzshn 889 60 14ms 3 Dec 2022 525th biocommando 🇫🇮 889 60 14ms 20 Dec 2022 525th Betuaredead 889 60 12ms 5 Jan 2023 525th piano-miles 889 60 10ms 16 Jan 2023 525th Yewzir 🇧🇪 889 60 12ms 12 Feb 2023 525th shellbertt 🇨🇦 889 60 12ms 26 Feb 2023 525th zakariamouhid 889 60 12ms 20 May 2023 525th raphaelimahorn 889 60 11ms 23 Aug 2023 525th jbt 889 60 11ms 25 Dec 2023 525th olleicua 🇺🇸 889 60 12ms 15 Feb 2024 525th HumanoidCPU 889 60 14ms 3 May 2024 525th dokutan 889 60 11ms 13 Aug 2024 525th LostSyntax21 🇬🇧 889 60 12ms 10 Sep 2024 525th xyangst 889 60 14ms 28 Sep 2024 525th a6166231 🇨🇳 889 60 12ms 15 May 2025 525th SebassNoob 889 60 14ms 5 Aug 2025 525th levinwinter 889 60 14ms 22 Oct 2025 525th Cube14yt 889 60 11ms 16 Nov 2025 525th gigaprofisi 🇺🇸 889 60 10ms 17 Nov 2025 525th amazingalek 🇳🇴 889 60 12ms 20 Dec 2025 525th shandriy 889 60 12ms 23 Jan 2026 525th spidunno 889 60 11ms 17 Feb 2026 555th Lydxn 🇨🇦 889 107 322ms 6 May 2022 555th CaedenHarper 🇨🇦 889 107 346ms 5 Oct 2025 557th Shanethegamer 🇺🇸 888 61 4ms 31 Oct 2022 557th MeWhenI 🇻🇦 888 61 4ms 4 Nov 2022 559th P-Quentin 🇫🇷 888 63 21ms 3 Aug 2022 559th kaptsanovb 888 63 29ms 20 Apr 2023 First Prev 481–560 of 3,752 Next Last