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 400th billings7 🇬🇧 903 86 384ms 15 May 2022 400th revlayle 🇺🇸 903 86 379ms 7 Dec 2022 400th albanian-laundromat 903 86 430ms 30 Sep 2025 404th m-tkach 🇺🇦 903 90 31ms 7 Dec 2023 405th piano-miles 903 92 411ms 24 Feb 2026 406th edsrzf 🇳🇿 902 52 1,067ms 24 days ago 407th Betuaredead 902 60 4ms 5 Jan 2023 407th Yewzir 🇧🇪 902 60 4ms 12 Feb 2023 407th Steffan153 🇫🇮 902 60 4ms 23 Feb 2023 407th GolfingSuccess 🇬🇷 902 60 4ms 16 Oct 2024 407th sean-niemann 🇺🇸 902 60 9ms 7 Mar 2025 412th shellbertt 🇨🇦 902 62 20ms 4 May 2022 412th ZakkkkAttackkkk 🇵🇭 902 62 20ms 5 May 2022 412th annaproxy 902 62 21ms 8 Jun 2022 412th bob-th 902 62 20ms 9 Jul 2022 412th btjones0 902 62 25ms 15 Jul 2022 412th tri1212 🇻🇳 902 62 20ms 18 Jul 2022 412th fredrik-bakke 🇳🇴 902 62 19ms 5 Oct 2022 412th jakobkordez 🇸🇮 902 62 20ms 19 Oct 2022 412th Fishron 902 62 19ms 29 Nov 2022 412th KatieLG 🇬🇧 902 62 21ms 11 Dec 2022 412th ItsMeNoobieboy 902 62 20ms 20 Dec 2022 412th firegene 🇮🇪 902 62 20ms 3 Jan 2023 412th ljweel 902 62 20ms 13 Feb 2023 412th 2011-Chan-Ethan 902 62 19ms 9 Jul 2023 412th elgan65536 🇺🇸 902 62 20ms 18 Nov 2023 412th Dataen 902 62 21ms 16 Jan 2024 412th Yewzir 🇧🇪 902 62 48ms 5 Apr 2024 412th cuboids 902 62 21ms 11 Jul 2024 412th wuzekai518 902 62 24ms 26 Jul 2024 412th abhishekg999 902 62 52ms 17 Sep 2024 412th lifthrasiir 🇰🇷 902 62 20ms 16 Nov 2024 412th Artemis21 🇬🇧 902 62 18ms 17 Jan 2025 412th lolgeny 902 62 19ms 22 Feb 2025 412th keelimeguy 🇺🇸 902 62 21ms 15 May 2025 412th DoubleUynn 902 62 19ms 25 Jun 2025 437th edsrzf 🇳🇿 902 83 41ms 14 Jan 2025 437th kg583 🇺🇸 902 83 42ms 14 Feb 2025 439th GolfingSuccess 🇬🇷 901 64 91ms 14 Dec 2024 439th MeWhenI 🇻🇦 901 64 96ms 24 Dec 2024 439th GrayJoKing 🇦🇺 901 64 72ms 25 Nov 2025 442nd Kacarott 🇦🇺 901 79 121ms 13 Jun 2024 443rd stefangimmillaro 901 92 130ms 24 Oct 2023 443rd inverseLorentz 🇦🇺 901 92 120ms 27 May 2024 443rd sean-niemann 🇺🇸 901 92 129ms 8 Jun 2025 443rd ian-h-chamberlain 🇺🇸 901 92 146ms 23 Nov 2025 447th michael-pruglo 🇺🇦 901 94 61ms 5 Jul 2022 447th zygoloid 901 94 60ms 5 Aug 2024 447th AdrienHache 🇫🇷 901 94 60ms 27 Dec 2025 450th Lydxn 🇨🇦 900 64 181ms 1 Apr 2023 451st MeWhenI 🇻🇦 899 63 197ms 5 May 2022 452nd Steffan153 🇫🇮 899 82 42ms 1 Apr 2023 452nd sean-niemann 🇺🇸 899 82 42ms 12 Jul 2024 454th Lydxn 🇨🇦 898 49 37ms 4 May 2022 454th JayXon 🇺🇸 898 49 37ms 17 Oct 2022 454th GrayJoKing 🇦🇺 898 49 37ms 15 Nov 2022 454th radarek 🇵🇱 898 49 192ms 26 Aug 2025 458th Lydxn 🇨🇦 898 70 96ms 7 May 2022 459th MeWhenI 🇻🇦 898 71 148ms 20 Aug 2024 460th m-tkach 🇺🇦 898 72 110ms 16 Oct 2022 460th GrayJoKing 🇦🇺 898 72 113ms 22 Oct 2022 460th emplv 🇱🇻 898 72 111ms 27 Oct 2022 460th sean-niemann 🇺🇸 898 72 172ms 7 Mar 2025 464th albanian-laundromat 897 106 274ms 22 Dec 2025 465th GrayJoKing 🇦🇺 896 74 66ms 1 Nov 2023 465th DialFrost 🇸🇬 896 74 17ms 22 Feb 2026 465th Steffan153 🇫🇮 896 74 17ms 22 Feb 2026 465th GrayJoKing 🇦🇺 896 74 16ms 22 Feb 2026 465th GolfingSuccess 🇬🇷 896 74 16ms 24 Feb 2026 465th snoozingnewt 🇨🇦 896 74 16ms 4 Mar 2026 465th edsrzf 🇳🇿 896 74 16ms 24 days ago 472nd Lydxn 🇨🇦 895 69 6ms 12 Sep 2022 472nd GrayJoKing 🇦🇺 895 69 7ms 12 Sep 2022 472nd btnlq 895 69 7ms 24 Sep 2022 472nd trinityy-7 895 69 2ms 7 Aug 2025 476th Steffan153 🇫🇮 894 67 112ms 18 Dec 2022 476th Lydxn 🇨🇦 894 67 122ms 4 Feb 2023 476th DialFrost 🇸🇬 894 67 101ms 17 Mar 2025 479th SirBogman 🇺🇸 893 50 516ms 5 May 2022 479th nwellnhof 🇩🇪 893 50 504ms 3 Jun 2022 First Prev 401–480 of 3,638 Next Last
