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 Submitted 69th Shanethegamer 🇺🇸 932 59 11ms 25 May 2023 69th Maznek 932 59 10ms 26 Jun 2023 69th SpiritAxolotl 🇺🇸 932 59 14ms 20 Mar 2024 69th Andrey-Plotnikov 932 59 10ms 19 May 2024 69th emgordon154 932 59 11ms 5 Aug 2024 69th duckyluuk 🇳🇱 932 59 9ms 3 Oct 2024 69th lifthrasiir 🇰🇷 932 59 11ms 23 Nov 2024 69th fuzzylojik-golf 🇺🇸 932 59 13ms 1 Jun 2025 69th acollett89 932 59 11ms 17 Jun 2025 69th iczelia 🇩🇪 932 59 12ms 23 Sep 2025 86th KatieLG 🇬🇧 917 60 11ms 4 May 2022 86th ScottHamper 917 60 10ms 5 May 2022 86th Re-Adventures 🇮🇳 917 60 12ms 5 May 2022 86th 0x24a537r9 917 60 11ms 29 Jul 2022 86th stefangabos 🇷🇴 917 60 10ms 19 Aug 2022 86th eranws 917 60 10ms 10 Sep 2022 86th GeorgeStechman 🇬🇧 917 60 10ms 26 Sep 2022 86th BloodStormKnight 917 60 11ms 15 Oct 2022 86th dzshn 917 60 12ms 3 Dec 2022 86th biocommando 🇫🇮 917 60 9ms 20 Dec 2022 86th Betuaredead 917 60 10ms 5 Jan 2023 86th piano-miles 917 60 11ms 16 Jan 2023 86th Yewzir 🇧🇪 917 60 10ms 12 Feb 2023 86th shellbertt 🇨🇦 917 60 10ms 26 Feb 2023 86th zakariamouhid 917 60 10ms 20 May 2023 86th raphaelimahorn 917 60 10ms 23 Aug 2023 86th jbt 917 60 11ms 25 Dec 2023 86th olleicua 🇺🇸 917 60 11ms 15 Feb 2024 86th HumanoidCPU 917 60 11ms 3 May 2024 86th dokutan 917 60 13ms 13 Aug 2024 86th LostSyntax21 🇬🇧 917 60 10ms 10 Sep 2024 86th xyangst 917 60 10ms 28 Sep 2024 86th a6166231 🇨🇳 917 60 10ms 15 May 2025 86th Protothor 917 60 10ms 8 Jul 2025 86th SebassNoob 917 60 11ms 5 Aug 2025 86th Yax42 🇫🇷 917 60 11ms 5 Sep 2025 86th levinwinter 917 60 11ms 6 hours ago 113th c0d3-4-F00d 🇩🇪 902 61 11ms 6 May 2022 113th jackkav 902 61 11ms 26 Jun 2022 113th TechNolaByte 902 61 11ms 6 Jul 2022 113th Heathcorp 🇦🇺 902 61 10ms 17 Jul 2022 113th C0de5mith 🇺🇸 902 61 11ms 3 Aug 2022 113th sebipopa 🇷🇴 902 61 10ms 18 Aug 2022 113th moikaturns 🇬🇧 902 61 14ms 25 Sep 2022 113th FlorianCassayre 🇫🇷 902 61 11ms 27 Sep 2022 113th Mazn3k 902 61 10ms 1 Feb 2023 113th tvcv901 902 61 11ms 22 Mar 2023 113th unfinishedprogram 902 61 11ms 19 Jul 2023 113th snoozingnewt 🇺🇸 902 61 11ms 23 Sep 2023 113th funnyboy-roks 902 61 10ms 9 May 2024 113th bac0id 902 61 9ms 29 Jun 2024 113th madex 🇩🇪 902 61 11ms 9 Jul 2024 113th FortuiteMan 🇫🇷 902 61 10ms 10 Oct 2024 113th RobertHoeh 902 61 11ms 5 Apr 2025 113th LvLError 902 61 11ms 29 May 2025 113th Lv0Sys 🇵🇱 902 61 12ms 30 May 2025 113th miles-evan 902 61 13ms 5 Aug 2025 113th alexsave 902 61 12ms 9 days ago 134th Setvizan 887 62 11ms 12 Jan 2023 134th GreenBeansAgainstVeganism 887 62 11ms 13 Jan 2023 134th arctouch-cristiannevianna 887 62 11ms 3 Apr 2023 134th Corxldyphik 887 62 11ms 11 Apr 2023 134th Blockyheadman 887 62 10ms 1 Nov 2023 134th ollyspooner 887 62 11ms 22 Nov 2023 134th itserasmus 887 62 11ms 25 Jan 2024 134th Jacob385 887 62 11ms 13 Mar 2024 134th junkondo-jp 887 62 12ms 30 Jun 2024 134th ShiraJoseph 🇺🇸 887 62 10ms 1 Mar 2025 144th randolchance 873 63 11ms 8 Jan 2023 144th CatsAreFluffy 873 63 11ms 18 Feb 2023 144th amiralitaheri 873 63 11ms 23 Feb 2023 144th RuyiLi 873 63 11ms 1 Apr 2023 144th TaserTheFox 🇺🇸 873 63 11ms 25 May 2023 144th pfysches-boop 873 63 14ms 6 Aug 2023 144th mhgockel 873 63 11ms 19 Aug 2023 First Prev 76–150 of 265 Next Last