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 156th pfysches-boop 873 63 10ms 6 Aug 2023 156th mhgockel 873 63 11ms 19 Aug 2023 156th NickTheEASDude 🇺🇸 873 63 11ms 18 Jan 2024 156th 823126 873 63 11ms 14 Nov 2024 156th Palladium02 873 63 11ms 12 May 2025 156th 4very 873 63 12ms 10 Jun 2025 156th Ultra814 873 63 11ms 21 Aug 2025 168th elisherer 🇮🇱 859 64 11ms 5 Jun 2022 168th Ashikpaul 🇮🇳 859 64 11ms 29 Jul 2022 168th LukeBridges 🇬🇧 859 64 11ms 26 Oct 2022 168th florton 859 64 11ms 18 Jan 2023 168th lyphyser 859 64 11ms 3 Jun 2023 168th Davr1 🇨🇿 859 64 11ms 14 Oct 2023 168th stellartux 859 64 10ms 26 Dec 2023 168th goodwyna21 859 64 10ms 12 Nov 2024 168th xShadowBlade 859 64 12ms 26 Dec 2024 168th richard-oelze 🇩🇪 859 64 11ms 4 Aug 2025 168th johnkiernander 859 64 11ms 15 Dec 2025 179th wansacis 🇩🇪 846 65 13ms 13 May 2022 179th krcs 🇵🇱 846 65 10ms 24 Nov 2022 179th ejini6969 846 65 13ms 1 Apr 2023 179th InspectorBoat 846 65 11ms 25 Oct 2023 179th jake6192 846 65 11ms 20 May 2025 179th LordSir101 846 65 11ms 11 Aug 2025 185th ChiefChippy2 833 66 11ms 4 May 2022 185th Radwatch 833 66 10ms 22 Jun 2022 185th TheCod-r 🇦🇶 833 66 10ms 10 Oct 2022 185th MadScience137 833 66 11ms 17 Oct 2022 185th nayakrujul 833 66 15ms 12 Mar 2023 185th HenryTy83 833 66 11ms 3 May 2023 185th charliegaming 833 66 12ms 3 Oct 2023 185th mobibluman 833 66 11ms 16 Oct 2023 185th azka1368 833 66 11ms 23 Nov 2023 185th thej10n 833 66 10ms 13 Jun 2024 185th Florian-Mt 833 66 11ms 22 Jul 2024 185th deancureton 833 66 12ms 29 Dec 2024 185th Quadruplay 833 66 11ms 12 Jul 2025 198th inverseLorentz 🇦🇺 821 67 10ms 25 Jun 2022 198th maxpelic 🇺🇸 821 67 11ms 5 Jul 2022 198th vroup 🇩🇰 821 67 10ms 29 Sep 2022 198th Bodo171 821 67 11ms 1 Dec 2022 198th Inbarw100 821 67 11ms 10 Jun 2023 198th raszpi 🇭🇺 821 67 11ms 1 Sep 2023 198th dijs 821 67 12ms 8 Mar 2024 198th yb1yb1 821 67 11ms 6 Oct 2024 198th smclaughlin-cf 821 67 13ms 25 Feb 2025 198th 52525rr 821 67 10ms 20 Oct 2025 208th Smetalo 809 68 11ms 25 Aug 2022 208th owen-c-parker 🇺🇸 809 68 10ms 23 Nov 2022 208th b10011 🇫🇮 809 68 11ms 27 Dec 2022 208th RasmusBV 809 68 12ms 19 Feb 2023 208th joakim-ronning 809 68 11ms 24 May 2023 208th TRexOnGit 809 68 11ms 31 Jan 2024 208th KasperKivimaeki 🇫🇮 809 68 11ms 1 Jan 2026 215th adoxography 797 69 10ms 13 Jul 2022 215th eshilo-draper 797 69 11ms 5 Oct 2022 215th 2pichar 797 69 11ms 11 Nov 2022 215th jorbDehmel 🇺🇸 797 69 11ms 17 Jun 2023 219th Jaro32768 🇸🇰 786 70 11ms 8 Feb 2024 219th Alex-Huggett 🇬🇧 786 70 11ms 15 Apr 2024 219th Moreallure 786 70 11ms 5 May 2024 219th AnnoyedArt1256 786 70 11ms 3 Jul 2025 223rd destofr 775 71 11ms 25 Aug 2022 223rd pyuraii 775 71 10ms 27 Sep 2022 223rd kydogia 775 71 11ms 18 Oct 2022 223rd jquade7 775 71 10ms 27 May 2023 223rd SniperSmiley 🇺🇸 775 71 11ms 7 Apr 2024 223rd dbkirk4211 775 71 12ms 3 May 2024 229th coolCucumber-cat 764 72 11ms 20 Mar 2023 229th mrmena 🇦🇺 764 72 11ms 19 Mar 2024 229th sulphemi 764 72 10ms 3 Apr 2025 232nd gurglemurgle5 753 73 12ms 12 May 2022 232nd adamnielson42 🇺🇸 753 73 13ms 24 Apr 2023 232nd fourth-bit 753 73 13ms 23 Jun 2023 232nd efgen 753 73 11ms 28 Jun 2023 232nd AlbatrossBay 753 73 12ms 8 Oct 2024 232nd ComputerKWasTaken 🇺🇸 753 73 10ms 20 Jan 2025 238th JesseNoEyes 🇺🇸 743 74 11ms 18 Sep 2024 239th draxler-h 724 76 11ms 14 Jan 2023 239th DragonaireM 724 76 11ms 6 Feb 2023 First Prev 161–240 of 278 Next Last