Collatz in JavaScript in bytes. 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 75th janbehrens 🇩🇪 932 59 10ms 17 May 2023 75th Shanethegamer 🇺🇸 932 59 11ms 25 May 2023 75th Maznek 932 59 10ms 26 Jun 2023 75th SpiritAxolotl 🇺🇸 932 59 10ms 20 Mar 2024 75th Andrey-Plotnikov 932 59 11ms 19 May 2024 75th emgordon154 932 59 11ms 5 Aug 2024 75th duckyluuk 🇳🇱 932 59 12ms 3 Oct 2024 75th lifthrasiir 🇰🇷 932 59 11ms 23 Nov 2024 75th fuzzylojik-golf 🇺🇸 932 59 11ms 1 Jun 2025 75th acollett89 932 59 12ms 17 Jun 2025 75th iczelia 🇩🇪 932 59 12ms 23 Sep 2025 75th Yax42 🇫🇷 932 59 10ms 20 Jan 2026 75th Protothor 932 59 11ms 9 days ago 94th KatieLG 🇬🇧 917 60 11ms 4 May 2022 94th ScottHamper 917 60 12ms 5 May 2022 94th Re-Adventures 🇮🇳 917 60 11ms 5 May 2022 94th 0x24a537r9 917 60 13ms 29 Jul 2022 94th stefangabos 🇷🇴 917 60 11ms 19 Aug 2022 94th eranws 917 60 11ms 10 Sep 2022 94th GeorgeStechman 🇬🇧 917 60 11ms 26 Sep 2022 94th BloodStormKnight 917 60 11ms 15 Oct 2022 94th dzshn 917 60 11ms 3 Dec 2022 94th biocommando 🇫🇮 917 60 10ms 20 Dec 2022 94th Betuaredead 917 60 12ms 5 Jan 2023 94th piano-miles 917 60 14ms 16 Jan 2023 94th Yewzir 🇧🇪 917 60 11ms 12 Feb 2023 94th shellbertt 🇨🇦 917 60 12ms 26 Feb 2023 94th zakariamouhid 917 60 10ms 20 May 2023 94th raphaelimahorn 917 60 11ms 23 Aug 2023 94th jbt 917 60 11ms 25 Dec 2023 94th olleicua 🇺🇸 917 60 9ms 15 Feb 2024 94th HumanoidCPU 917 60 12ms 3 May 2024 94th dokutan 917 60 11ms 13 Aug 2024 94th LostSyntax21 🇬🇧 917 60 10ms 10 Sep 2024 94th xyangst 917 60 11ms 28 Sep 2024 94th a6166231 🇨🇳 917 60 10ms 15 May 2025 94th SebassNoob 917 60 10ms 5 Aug 2025 94th levinwinter 917 60 10ms 22 Oct 2025 94th Cube14yt 917 60 10ms 16 Nov 2025 94th gigaprofisi 🇺🇸 917 60 11ms 17 Nov 2025 94th amazingalek 🇳🇴 917 60 10ms 20 Dec 2025 94th shandriy 917 60 10ms 23 Jan 2026 94th spidunno 917 60 11ms 17 Feb 2026 124th c0d3-4-F00d 🇩🇪 902 61 11ms 6 May 2022 124th jackkav 902 61 10ms 26 Jun 2022 124th TechNolaByte 902 61 10ms 6 Jul 2022 124th Heathcorp 🇦🇺 902 61 11ms 17 Jul 2022 124th C0de5mith 🇺🇸 902 61 11ms 3 Aug 2022 124th sebipopa 🇷🇴 902 61 11ms 18 Aug 2022 124th moikaturns 🇬🇧 902 61 10ms 25 Sep 2022 124th FlorianCassayre 🇫🇷 902 61 12ms 27 Sep 2022 124th Mazn3k 902 61 11ms 1 Feb 2023 124th tvcv901 902 61 11ms 22 Mar 2023 124th unfinishedprogram 902 61 11ms 19 Jul 2023 124th snoozingnewt 🇨🇦 902 61 11ms 23 Sep 2023 124th funnyboy-roks 902 61 11ms 9 May 2024 124th bac0id 902 61 10ms 29 Jun 2024 124th FortuiteMan 🇫🇷 902 61 11ms 10 Oct 2024 124th RobertHoeh 902 61 10ms 5 Apr 2025 124th LvLError 902 61 11ms 29 May 2025 124th miles-evan 902 61 10ms 5 Aug 2025 124th alexsave 902 61 10ms 13 Oct 2025 124th jusaka 902 61 12ms 3 days ago 144th Setvizan 887 62 13ms 12 Jan 2023 144th GreenBeansAgainstVeganism 887 62 11ms 13 Jan 2023 144th arctouch-cristiannevianna 887 62 12ms 3 Apr 2023 144th Corxldyphik 887 62 10ms 11 Apr 2023 144th Blockyheadman 887 62 10ms 1 Nov 2023 144th ollyspooner 887 62 11ms 22 Nov 2023 144th itserasmus 887 62 11ms 25 Jan 2024 144th Jacob385 887 62 10ms 13 Mar 2024 144th junkondo-jp 887 62 11ms 30 Jun 2024 144th ShiraJoseph 🇺🇸 887 62 11ms 1 Mar 2025 144th tomh1012 887 62 12ms 3 Dec 2025 155th randolchance 873 63 11ms 8 Jan 2023 155th CatsAreFluffy 873 63 13ms 18 Feb 2023 155th amiralitaheri 873 63 10ms 23 Feb 2023 155th RuyiLi 873 63 11ms 1 Apr 2023 155th TaserTheFox 🇺🇸 873 63 11ms 25 May 2023 155th pfysches-boop 873 63 11ms 6 Aug 2023 First Prev 81–160 of 277 Next Last