Collatz in JavaScript in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time 141st 4very 873 63 10 Jun 2025 141st gigaprofisi 🇺🇸 873 63 17 Jun 2025 141st Ultra814 873 63 21 Aug 2025 154th elisherer 🇮🇱 859 64 5 Jun 2022 154th Ashikpaul 🇮🇳 859 64 29 Jul 2022 154th LukeBridges 🇬🇧 859 64 26 Oct 2022 154th florton 859 64 18 Jan 2023 154th DayDun 🇸🇪 859 64 24 Jan 2023 154th lyphyser 859 64 3 Jun 2023 154th Davr1 🇨🇿 859 64 14 Oct 2023 154th stellartux 859 64 26 Dec 2023 154th goodwyna21 859 64 12 Nov 2024 154th xShadowBlade 859 64 26 Dec 2024 154th richard-oelze 🇩🇪 859 64 4 Aug 2025 165th wansacis 🇩🇪 846 65 13 May 2022 165th krcs 🇵🇱 846 65 24 Nov 2022 165th ejini6969 846 65 1 Apr 2023 165th InspectorBoat 846 65 25 Oct 2023 165th jake6192 846 65 20 May 2025 165th LordSir101 846 65 11 Aug 2025 171st ChiefChippy2 833 66 4 May 2022 171st Radwatch 833 66 22 Jun 2022 171st TheCod-r 🇦🇶 833 66 10 Oct 2022 171st MadScience137 833 66 17 Oct 2022 171st nayakrujul 833 66 12 Mar 2023 171st HenryTy83 833 66 3 May 2023 171st charliegaming 833 66 3 Oct 2023 171st mobibluman 833 66 16 Oct 2023 171st azka1368 833 66 23 Nov 2023 171st thej10n 833 66 13 Jun 2024 171st Florian-Mt 833 66 22 Jul 2024 171st deancureton 833 66 29 Dec 2024 171st Quadruplay 833 66 12 Jul 2025 184th inverseLorentz 🇦🇺 821 67 25 Jun 2022 184th maxpelic 🇺🇸 821 67 5 Jul 2022 184th vroup 🇩🇰 821 67 29 Sep 2022 184th Bodo171 821 67 1 Dec 2022 184th Inbarw100 821 67 10 Jun 2023 184th raszpi 🇭🇺 821 67 1 Sep 2023 184th dijs 821 67 8 Mar 2024 184th yb1yb1 821 67 6 Oct 2024 184th smclaughlin-cf 821 67 25 Feb 2025 184th 52525rr 821 67 2 hours ago 194th Smetalo 809 68 25 Aug 2022 194th TheRealOhead 🇺🇸 809 68 23 Nov 2022 194th b10011 🇫🇮 809 68 27 Dec 2022 194th RasmusBV 809 68 19 Feb 2023 194th joakim-ronning 809 68 24 May 2023 194th TRexOnGit 809 68 31 Jan 2024 200th adoxography 797 69 13 Jul 2022 200th eshilo-draper 797 69 5 Oct 2022 200th 2pichar 797 69 11 Nov 2022 200th jorbDehmel 🇺🇸 797 69 17 Jun 2023 204th Jaro32768 🇸🇰 786 70 8 Feb 2024 204th Alex-Huggett 🇬🇧 786 70 15 Apr 2024 204th Moreallure 786 70 5 May 2024 204th AnnoyedArt1256 786 70 3 Jul 2025 208th destofr 775 71 25 Aug 2022 208th pyuraii 775 71 27 Sep 2022 208th kydogia 775 71 18 Oct 2022 208th jquade7 775 71 27 May 2023 208th SniperSmiley 🇺🇸 775 71 7 Apr 2024 208th dbkirk4211 775 71 3 May 2024 214th coolCucumber-cat 764 72 20 Mar 2023 214th mrmena 🇦🇺 764 72 19 Mar 2024 214th sulphemi 764 72 3 Apr 2025 217th gurglemurgle5 753 73 12 May 2022 217th adamnielson42 🇺🇸 753 73 24 Apr 2023 217th fourth-bit 753 73 23 Jun 2023 217th efgen 753 73 28 Jun 2023 217th AlbatrossBay 753 73 8 Oct 2024 217th ComputerKWasTaken 🇺🇸 753 73 20 Jan 2025 223rd JesseNoEyes 🇺🇸 743 74 18 Sep 2024 224th draxler-h 724 76 14 Jan 2023 224th DragonaireM 724 76 6 Feb 2023 First Prev 151–225 of 262 Next Last