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 68th Maznek 932 59 26 Jun 2023 68th SpiritAxolotl 🇺🇸 932 59 20 Mar 2024 68th Andrey-Plotnikov 932 59 19 May 2024 68th emgordon154 932 59 5 Aug 2024 68th duckyluuk 🇳🇱 932 59 3 Oct 2024 68th lifthrasiir 🇰🇷 932 59 23 Nov 2024 68th fuzzylojik-golf 🇺🇸 932 59 1 Jun 2025 68th acollett89 932 59 17 Jun 2025 68th iczelia 🇩🇪 932 59 23 Sep 2025 85th KatieLG 🇬🇧 917 60 4 May 2022 85th ScottHamper 917 60 5 May 2022 85th Re-Adventures 🇮🇳 917 60 5 May 2022 85th 0x24a537r9 917 60 29 Jul 2022 85th stefangabos 🇷🇴 917 60 19 Aug 2022 85th eranws 917 60 10 Sep 2022 85th GeorgeStechman 🇬🇧 917 60 26 Sep 2022 85th BloodStormKnight 917 60 15 Oct 2022 85th dzshn 917 60 3 Dec 2022 85th biocommando 🇫🇮 917 60 20 Dec 2022 85th Betuaredead 917 60 5 Jan 2023 85th piano-miles 917 60 16 Jan 2023 85th Yewzir 🇧🇪 917 60 12 Feb 2023 85th shellbertt 🇨🇦 917 60 26 Feb 2023 85th zakariamouhid 917 60 20 May 2023 85th raphaelimahorn 917 60 23 Aug 2023 85th jbt 917 60 25 Dec 2023 85th olleicua 🇺🇸 917 60 15 Feb 2024 85th HumanoidCPU 917 60 3 May 2024 85th dokutan 917 60 13 Aug 2024 85th LostSyntax21 🇬🇧 917 60 10 Sep 2024 85th xyangst 917 60 28 Sep 2024 85th a6166231 🇨🇳 917 60 15 May 2025 85th Protothor 917 60 8 Jul 2025 85th SebassNoob 917 60 5 Aug 2025 85th Yax42 🇫🇷 917 60 5 Sep 2025 111th c0d3-4-F00d 🇩🇪 902 61 6 May 2022 111th jackkav 902 61 26 Jun 2022 111th TechNolaByte 902 61 6 Jul 2022 111th Heathcorp 🇦🇺 902 61 17 Jul 2022 111th C0de5mith 🇺🇸 902 61 3 Aug 2022 111th sebipopa 🇷🇴 902 61 18 Aug 2022 111th moikaturns 🇬🇧 902 61 25 Sep 2022 111th FlorianCassayre 🇫🇷 902 61 27 Sep 2022 111th Mazn3k 902 61 1 Feb 2023 111th tvcv901 902 61 22 Mar 2023 111th unfinishedprogram 902 61 19 Jul 2023 111th snoozingnewt 🇺🇸 902 61 23 Sep 2023 111th funnyboy-roks 902 61 9 May 2024 111th bac0id 902 61 29 Jun 2024 111th madex 🇩🇪 902 61 9 Jul 2024 111th FortuiteMan 🇫🇷 902 61 10 Oct 2024 111th RobertHoeh 902 61 5 Apr 2025 111th LvLError 902 61 29 May 2025 111th Lv0Sys 🇵🇱 902 61 30 May 2025 111th miles-evan 902 61 5 Aug 2025 111th alexsave 902 61 12ms 8 days ago 132nd Setvizan 887 62 12 Jan 2023 132nd GreenBeansAgainstVeganism 887 62 13 Jan 2023 132nd arctouch-cristiannevianna 887 62 3 Apr 2023 132nd Corxldyphik 887 62 11 Apr 2023 132nd Blockyheadman 887 62 1 Nov 2023 132nd ollyspooner 887 62 22 Nov 2023 132nd itserasmus 887 62 25 Jan 2024 132nd Jacob385 887 62 13 Mar 2024 132nd junkondo-jp 887 62 30 Jun 2024 132nd ShiraJoseph 🇺🇸 887 62 1 Mar 2025 142nd randolchance 873 63 8 Jan 2023 142nd CatsAreFluffy 873 63 18 Feb 2023 142nd amiralitaheri 873 63 23 Feb 2023 142nd RuyiLi 873 63 1 Apr 2023 142nd TaserTheFox 🇺🇸 873 63 25 May 2023 142nd pfysches-boop 873 63 6 Aug 2023 142nd mhgockel 873 63 19 Aug 2023 142nd NickTheEASDude 🇺🇸 873 63 18 Jan 2024 142nd 823126 873 63 14 Nov 2024 First Prev 76–150 of 263 Next Last