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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 153rd 823126 873 63 12ms 14 Nov 2024 153rd Palladium02 873 63 10ms 12 May 2025 153rd 4very 873 63 13ms 10 Jun 2025 153rd Ultra814 873 63 11ms 21 Aug 2025 165th elisherer 🇮🇱 859 64 11ms 5 Jun 2022 165th Ashikpaul 🇮🇳 859 64 11ms 29 Jul 2022 165th LukeBridges 🇬🇧 859 64 12ms 26 Oct 2022 165th florton 859 64 12ms 18 Jan 2023 165th DayDun 🇸🇪 859 64 11ms 24 Jan 2023 165th lyphyser 859 64 10ms 3 Jun 2023 165th Davr1 🇨🇿 859 64 11ms 14 Oct 2023 165th stellartux 859 64 11ms 26 Dec 2023 165th goodwyna21 859 64 11ms 12 Nov 2024 165th xShadowBlade 859 64 18ms 26 Dec 2024 165th richard-oelze 🇩🇪 859 64 13ms 4 Aug 2025 165th johnkiernander 859 64 11ms 15 Dec 2025 177th wansacis 🇩🇪 846 65 11ms 13 May 2022 177th krcs 🇵🇱 846 65 12ms 24 Nov 2022 177th ejini6969 846 65 11ms 1 Apr 2023 177th InspectorBoat 846 65 11ms 25 Oct 2023 177th jake6192 846 65 11ms 20 May 2025 177th LordSir101 846 65 12ms 11 Aug 2025 183rd ChiefChippy2 833 66 11ms 4 May 2022 183rd Radwatch 833 66 11ms 22 Jun 2022 183rd TheCod-r 🇦🇶 833 66 11ms 10 Oct 2022 183rd MadScience137 833 66 16ms 17 Oct 2022 183rd nayakrujul 833 66 11ms 12 Mar 2023 183rd HenryTy83 833 66 15ms 3 May 2023 183rd charliegaming 833 66 12ms 3 Oct 2023 183rd mobibluman 833 66 14ms 16 Oct 2023 183rd azka1368 833 66 11ms 23 Nov 2023 183rd thej10n 833 66 12ms 13 Jun 2024 183rd Florian-Mt 833 66 10ms 22 Jul 2024 183rd deancureton 833 66 11ms 29 Dec 2024 183rd Quadruplay 833 66 11ms 12 Jul 2025 196th inverseLorentz 🇦🇺 821 67 11ms 25 Jun 2022 196th maxpelic 🇺🇸 821 67 12ms 5 Jul 2022 196th vroup 🇩🇰 821 67 13ms 29 Sep 2022 196th Bodo171 821 67 14ms 1 Dec 2022 196th Inbarw100 821 67 11ms 10 Jun 2023 196th raszpi 🇭🇺 821 67 11ms 1 Sep 2023 196th dijs 821 67 11ms 8 Mar 2024 196th yb1yb1 821 67 12ms 6 Oct 2024 196th smclaughlin-cf 821 67 10ms 25 Feb 2025 196th 52525rr 821 67 11ms 20 Oct 2025 206th Smetalo 809 68 11ms 25 Aug 2022 206th TheRealOhead 🇺🇸 809 68 11ms 23 Nov 2022 206th b10011 🇫🇮 809 68 11ms 27 Dec 2022 206th RasmusBV 809 68 11ms 19 Feb 2023 206th joakim-ronning 809 68 11ms 24 May 2023 206th TRexOnGit 809 68 11ms 31 Jan 2024 206th KasperKivimaeki 🇫🇮 809 68 14ms 1 Jan 2026 213th adoxography 797 69 11ms 13 Jul 2022 213th eshilo-draper 797 69 14ms 5 Oct 2022 213th 2pichar 797 69 11ms 11 Nov 2022 213th jorbDehmel 🇺🇸 797 69 11ms 17 Jun 2023 217th Jaro32768 🇸🇰 786 70 11ms 8 Feb 2024 217th Alex-Huggett 🇬🇧 786 70 11ms 15 Apr 2024 217th Moreallure 786 70 11ms 5 May 2024 217th AnnoyedArt1256 786 70 12ms 3 Jul 2025 221st destofr 775 71 10ms 25 Aug 2022 221st pyuraii 775 71 11ms 27 Sep 2022 221st kydogia 775 71 13ms 18 Oct 2022 221st jquade7 775 71 12ms 27 May 2023 221st SniperSmiley 🇺🇸 775 71 13ms 7 Apr 2024 221st dbkirk4211 775 71 12ms 3 May 2024 227th coolCucumber-cat 764 72 11ms 20 Mar 2023 227th mrmena 🇦🇺 764 72 10ms 19 Mar 2024 227th sulphemi 764 72 12ms 3 Apr 2025 230th gurglemurgle5 753 73 12ms 12 May 2022 230th adamnielson42 🇺🇸 753 73 13ms 24 Apr 2023 230th fourth-bit 753 73 14ms 23 Jun 2023 230th efgen 753 73 12ms 28 Jun 2023 230th AlbatrossBay 753 73 11ms 8 Oct 2024 230th ComputerKWasTaken 🇺🇸 753 73 11ms 20 Jan 2025 236th JesseNoEyes 🇺🇸 743 74 10ms 18 Sep 2024 237th draxler-h 724 76 11ms 14 Jan 2023 237th DragonaireM 724 76 11ms 6 Feb 2023 237th dteague3989 724 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