Collatz in JavaScript 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 152nd Palladium02 873 63 11ms 12 May 2025 152nd 4very 873 63 11ms 10 Jun 2025 152nd Ultra814 873 63 10ms 21 Aug 2025 164th elisherer 🇮🇱 859 64 13ms 5 Jun 2022 164th Ashikpaul 🇮🇳 859 64 11ms 29 Jul 2022 164th LukeBridges 🇬🇧 859 64 11ms 26 Oct 2022 164th florton 859 64 11ms 18 Jan 2023 164th DayDun 🇸🇪 859 64 11ms 24 Jan 2023 164th lyphyser 859 64 11ms 3 Jun 2023 164th Davr1 🇨🇿 859 64 12ms 14 Oct 2023 164th stellartux 859 64 11ms 26 Dec 2023 164th goodwyna21 859 64 16ms 12 Nov 2024 164th xShadowBlade 859 64 14ms 26 Dec 2024 164th richard-oelze 🇩🇪 859 64 11ms 4 Aug 2025 164th johnkiernander 859 64 11ms 15 Dec 2025 176th wansacis 🇩🇪 846 65 11ms 13 May 2022 176th krcs 🇵🇱 846 65 12ms 24 Nov 2022 176th ejini6969 846 65 12ms 1 Apr 2023 176th InspectorBoat 846 65 10ms 25 Oct 2023 176th jake6192 846 65 11ms 20 May 2025 176th LordSir101 846 65 12ms 11 Aug 2025 182nd ChiefChippy2 833 66 10ms 4 May 2022 182nd Radwatch 833 66 10ms 22 Jun 2022 182nd TheCod-r 🇦🇶 833 66 11ms 10 Oct 2022 182nd MadScience137 833 66 12ms 17 Oct 2022 182nd nayakrujul 833 66 13ms 12 Mar 2023 182nd HenryTy83 833 66 11ms 3 May 2023 182nd charliegaming 833 66 10ms 3 Oct 2023 182nd mobibluman 833 66 11ms 16 Oct 2023 182nd azka1368 833 66 12ms 23 Nov 2023 182nd thej10n 833 66 12ms 13 Jun 2024 182nd Florian-Mt 833 66 11ms 22 Jul 2024 182nd deancureton 833 66 12ms 29 Dec 2024 182nd Quadruplay 833 66 11ms 12 Jul 2025 195th inverseLorentz 🇦🇺 821 67 10ms 25 Jun 2022 195th maxpelic 🇺🇸 821 67 12ms 5 Jul 2022 195th vroup 🇩🇰 821 67 13ms 29 Sep 2022 195th Bodo171 821 67 12ms 1 Dec 2022 195th Inbarw100 821 67 11ms 10 Jun 2023 195th raszpi 🇭🇺 821 67 12ms 1 Sep 2023 195th dijs 821 67 10ms 8 Mar 2024 195th yb1yb1 821 67 12ms 6 Oct 2024 195th smclaughlin-cf 821 67 11ms 25 Feb 2025 195th 52525rr 821 67 15ms 20 Oct 2025 205th Smetalo 809 68 12ms 25 Aug 2022 205th TheRealOhead 🇺🇸 809 68 11ms 23 Nov 2022 205th b10011 🇫🇮 809 68 10ms 27 Dec 2022 205th RasmusBV 809 68 11ms 19 Feb 2023 205th joakim-ronning 809 68 15ms 24 May 2023 205th TRexOnGit 809 68 11ms 31 Jan 2024 205th KasperKivimaeki 🇫🇮 809 68 10ms 1 Jan 2026 212th adoxography 797 69 10ms 13 Jul 2022 212th eshilo-draper 797 69 16ms 5 Oct 2022 212th 2pichar 797 69 11ms 11 Nov 2022 212th jorbDehmel 🇺🇸 797 69 11ms 17 Jun 2023 216th Jaro32768 🇸🇰 786 70 12ms 8 Feb 2024 216th Alex-Huggett 🇬🇧 786 70 12ms 15 Apr 2024 216th Moreallure 786 70 11ms 5 May 2024 216th AnnoyedArt1256 786 70 11ms 3 Jul 2025 220th destofr 775 71 11ms 25 Aug 2022 220th pyuraii 775 71 11ms 27 Sep 2022 220th kydogia 775 71 11ms 18 Oct 2022 220th jquade7 775 71 12ms 27 May 2023 220th SniperSmiley 🇺🇸 775 71 10ms 7 Apr 2024 220th dbkirk4211 775 71 11ms 3 May 2024 226th coolCucumber-cat 764 72 10ms 20 Mar 2023 226th mrmena 🇦🇺 764 72 10ms 19 Mar 2024 226th sulphemi 764 72 15ms 3 Apr 2025 229th gurglemurgle5 753 73 10ms 12 May 2022 229th adamnielson42 🇺🇸 753 73 14ms 24 Apr 2023 229th fourth-bit 753 73 14ms 23 Jun 2023 229th efgen 753 73 12ms 28 Jun 2023 229th AlbatrossBay 753 73 11ms 8 Oct 2024 229th ComputerKWasTaken 🇺🇸 753 73 14ms 20 Jan 2025 235th JesseNoEyes 🇺🇸 743 74 11ms 18 Sep 2024 236th draxler-h 724 76 11ms 14 Jan 2023 236th DragonaireM 724 76 11ms 6 Feb 2023 236th dteague3989 724 76 17ms 12 Aug 2023 236th kmathis22 724 76 12ms 25 Sep 2025 240th astdefu 714 77 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