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 479th DialFrost 🇸🇬 895 67 98ms 17 Mar 2025 482nd trinityy-7 895 69 2ms 7 Aug 2025 483rd Lydxn 🇨🇦 895 72 353ms 16 Jul 2023 484th Shanethegamer 🇺🇸 895 83 1,697ms 4 May 2022 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 SirBogman 🇺🇸 893 50 506ms 5 May 2022 493rd nwellnhof 🇩🇪 893 50 419ms 3 Jun 2022 493rd Lydxn 🇨🇦 893 50 431ms 15 Aug 2022 493rd Steffan153 🇫🇮 893 50 436ms 9 Aug 2024 497th Ripick 893 73 122ms 8 May 2023 498th edsrzf 🇳🇿 893 78 12ms 26 Oct 2024 498th edsrzf 🇳🇿 893 78 17ms 16 Aug 2025 500th MichalMarsalek 🇨🇿 893 87 379ms 5 May 2022 500th Kloppermand 🇩🇰 893 87 350ms 7 Oct 2022 500th bwat2 893 87 367ms 6 Apr 2023 500th bpharaldsson 893 87 358ms 9 Feb 2026 504th dokutan 893 88 425ms 15 Feb 2026 505th oeb25 892 93 124ms 16 May 2022 505th snobee 🇨🇦 892 93 128ms 8 Dec 2022 505th logvp 892 93 126ms 2 Jan 2024 505th smartiel 892 93 126ms 12 Aug 2024 505th trist224 🇫🇷 892 93 127ms 12 Aug 2024 505th nullie 892 93 128ms 19 Dec 2024 505th lolgeny 892 93 138ms 22 Feb 2025 512th GolfingSuccess 🇬🇷 892 95 61ms 5 May 2022 512th Alex-x90 🇺🇸 892 95 62ms 4 Dec 2022 512th Mandrzejy 🇵🇱 892 95 61ms 22 Mar 2024 515th p-zubieta 891 48 295ms 6 Mar 2024 516th JayXon 🇺🇸 891 74 2,363ms 14 Nov 2024 517th Steffan153 🇫🇮 891 80 28ms 15 Nov 2022 517th error256 891 80 117ms 8 Apr 2025 519th canissimia 🇦🇶 890 204 16ms 25 Nov 2023 520th KatieLG 🇬🇧 889 60 15ms 4 May 2022 520th ScottHamper 889 60 10ms 5 May 2022 520th Re-Adventures 🇮🇳 889 60 10ms 5 May 2022 520th 0x24a537r9 889 60 11ms 29 Jul 2022 520th stefangabos 🇷🇴 889 60 10ms 19 Aug 2022 520th eranws 889 60 11ms 10 Sep 2022 520th GeorgeStechman 🇬🇧 889 60 12ms 26 Sep 2022 520th BloodStormKnight 889 60 12ms 15 Oct 2022 520th dzshn 889 60 12ms 3 Dec 2022 520th biocommando 🇫🇮 889 60 10ms 20 Dec 2022 520th Betuaredead 889 60 14ms 5 Jan 2023 520th piano-miles 889 60 12ms 16 Jan 2023 520th Yewzir 🇧🇪 889 60 10ms 12 Feb 2023 520th shellbertt 🇨🇦 889 60 10ms 26 Feb 2023 520th zakariamouhid 889 60 10ms 20 May 2023 520th raphaelimahorn 889 60 10ms 23 Aug 2023 520th jbt 889 60 12ms 25 Dec 2023 520th olleicua 🇺🇸 889 60 12ms 15 Feb 2024 520th HumanoidCPU 889 60 11ms 3 May 2024 520th dokutan 889 60 10ms 13 Aug 2024 520th LostSyntax21 🇬🇧 889 60 13ms 10 Sep 2024 520th xyangst 889 60 11ms 28 Sep 2024 520th a6166231 🇨🇳 889 60 12ms 15 May 2025 520th SebassNoob 889 60 12ms 5 Aug 2025 520th levinwinter 889 60 11ms 22 Oct 2025 520th Cube14yt 889 60 11ms 16 Nov 2025 520th gigaprofisi 🇺🇸 889 60 11ms 17 Nov 2025 520th amazingalek 🇳🇴 889 60 13ms 20 Dec 2025 520th shandriy 889 60 11ms 23 Jan 2026 520th spidunno 889 60 12ms 17 Feb 2026 550th Lydxn 🇨🇦 889 107 322ms 6 May 2022 550th CaedenHarper 🇨🇦 889 107 346ms 5 Oct 2025 552nd jared-hughes 889 130 22ms 15 Dec 2024 553rd Shanethegamer 🇺🇸 888 61 4ms 31 Oct 2022 553rd MeWhenI 🇻🇦 888 61 4ms 4 Nov 2022 555th snoozingnewt 🇨🇦 888 95 112ms 4 Dec 2025 555th Steffan153 🇫🇮 888 95 111ms 27 Feb 2026 557th canissimia 🇦🇶 888 110 2,640ms 20 Feb 2023 558th P-Quentin 🇫🇷 887 63 21ms 3 Aug 2022 558th kaptsanovb 887 63 29ms 20 Apr 2023 558th fkantelberg 887 63 20ms 14 Jul 2023 First Prev 481–560 of 3,733 Next Last