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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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 451st MeWhenI 🇻🇦 899 63 206ms 5 May 2022 452nd Shanethegamer 🇺🇸 899 72 4ms 4 May 2022 452nd jared-hughes 899 72 4ms 4 May 2022 452nd Waffle3z 899 72 7ms 5 May 2022 452nd Blendi-Goose 899 72 6ms 16 Mar 2025 452nd edsrzf 🇳🇿 899 72 5ms 12 Apr 2025 452nd sean-niemann 🇺🇸 899 72 6ms 16 Oct 2025 458th michael-pruglo 🇺🇦 899 94 52ms 5 Jul 2022 458th zygoloid 899 94 51ms 5 Aug 2024 460th shinh 898 52 42ms 29 Jun 2022 460th MeWhenI 🇻🇦 898 52 84ms 25 Jul 2023 462nd Lydxn 🇨🇦 898 70 88ms 7 May 2022 463rd MeWhenI 🇻🇦 898 71 102ms 20 Aug 2024 464th m-tkach 🇺🇦 898 72 104ms 16 Oct 2022 464th GrayJoKing 🇦🇺 898 72 114ms 22 Oct 2022 464th emplv 🇱🇻 898 72 105ms 27 Oct 2022 464th sean-niemann 🇺🇸 898 72 124ms 7 Mar 2025 468th Steffan153 🇫🇮 897 82 44ms 1 Apr 2023 468th sean-niemann 🇺🇸 897 82 43ms 12 Jul 2024 470th sean-niemann 🇺🇸 897 108 261ms 25 May 2024 470th GolfingSuccess 🇬🇷 897 108 252ms 6 Sep 2025 472nd Lydxn 🇨🇦 895 69 7ms 12 Sep 2022 472nd GrayJoKing 🇦🇺 895 69 7ms 12 Sep 2022 472nd btnlq 895 69 7ms 24 Sep 2022 475th trinityy-7 894 69 2ms 7 Aug 2025 476th SirBogman 🇺🇸 892 50 407ms 5 May 2022 476th nwellnhof 🇩🇪 892 50 402ms 3 Jun 2022 476th Lydxn 🇨🇦 892 50 413ms 15 Aug 2022 476th Steffan153 🇫🇮 892 50 390ms 9 Aug 2024 480th edsrzf 🇳🇿 892 78 12ms 26 Oct 2024 480th kg583 🇺🇸 892 78 11ms 25 Sep 2025 482nd MichalMarsalek 🇨🇿 892 87 324ms 5 May 2022 482nd Kloppermand 🇩🇰 892 87 326ms 7 Oct 2022 482nd bwat2 892 87 317ms 6 Apr 2023 485th GrayJoKing 🇦🇺 892 91 31ms 19 Jan 2023 486th Lydxn 🇨🇦 891 72 302ms 16 Jul 2023 487th oeb25 891 93 128ms 16 May 2022 487th snobee 🇨🇦 891 93 130ms 8 Dec 2022 487th logvp 891 93 123ms 2 Jan 2024 487th elgan65536 891 93 124ms 5 Mar 2024 487th smartiel 891 93 120ms 12 Aug 2024 487th trist224 🇫🇷 891 93 126ms 12 Aug 2024 487th nullie 891 93 126ms 19 Dec 2024 487th lolgeny 891 93 126ms 22 Feb 2025 495th p-zubieta 890 48 259ms 6 Mar 2024 496th Ripick 890 73 121ms 8 May 2023 497th Steffan153 🇫🇮 890 80 24ms 11 Dec 2023 498th GolfingSuccess 🇬🇷 890 95 52ms 5 May 2022 498th Alex-x90 🇺🇸 890 95 53ms 4 Dec 2022 498th Mandrzejy 🇵🇱 890 95 53ms 22 Mar 2024 501st Steffan153 🇫🇮 889 80 40ms 15 Nov 2022 501st error256 889 80 130ms 8 Apr 2025 503rd MeWhenI 🇻🇦 889 109 255ms 9 Feb 2023 504th KatieLG 🇬🇧 888 60 10ms 4 May 2022 504th ScottHamper 888 60 10ms 5 May 2022 504th Re-Adventures 🇮🇳 888 60 10ms 5 May 2022 504th 0x24a537r9 888 60 10ms 29 Jul 2022 504th stefangabos 🇷🇴 888 60 10ms 19 Aug 2022 504th eranws 888 60 10ms 10 Sep 2022 504th GeorgeStechman 🇬🇧 888 60 10ms 26 Sep 2022 504th BloodStormKnight 888 60 10ms 15 Oct 2022 504th dzshn 888 60 9ms 3 Dec 2022 504th biocommando 🇫🇮 888 60 10ms 20 Dec 2022 504th Betuaredead 888 60 9ms 5 Jan 2023 504th piano-miles 888 60 10ms 16 Jan 2023 504th Yewzir 🇧🇪 888 60 10ms 12 Feb 2023 504th shellbertt 🇨🇦 888 60 10ms 26 Feb 2023 504th zakariamouhid 888 60 9ms 20 May 2023 504th raphaelimahorn 888 60 10ms 23 Aug 2023 504th jbt 888 60 11ms 25 Dec 2023 504th olleicua 🇺🇸 888 60 10ms 15 Feb 2024 504th HumanoidCPU 888 60 10ms 3 May 2024 504th dokutan 888 60 9ms 13 Aug 2024 504th LostSyntax21 🇬🇧 888 60 10ms 10 Sep 2024 504th xyangst 888 60 10ms 28 Sep 2024 First Prev 451–525 of 3,470 Next Last