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 154th NickTheEASDude 🇺🇸 873 63 11ms 18 Jan 2024 154th 823126 873 63 12ms 14 Nov 2024 154th Palladium02 873 63 10ms 12 May 2025 154th 4very 873 63 10ms 10 Jun 2025 154th Ultra814 873 63 10ms 21 Aug 2025 166th elisherer 🇮🇱 859 64 10ms 5 Jun 2022 166th Ashikpaul 🇮🇳 859 64 11ms 29 Jul 2022 166th LukeBridges 🇬🇧 859 64 12ms 26 Oct 2022 166th florton 859 64 13ms 18 Jan 2023 166th DayDun 🇸🇪 859 64 11ms 24 Jan 2023 166th lyphyser 859 64 11ms 3 Jun 2023 166th Davr1 🇨🇿 859 64 11ms 14 Oct 2023 166th stellartux 859 64 11ms 26 Dec 2023 166th goodwyna21 859 64 11ms 12 Nov 2024 166th xShadowBlade 859 64 11ms 26 Dec 2024 166th richard-oelze 🇩🇪 859 64 10ms 4 Aug 2025 166th johnkiernander 859 64 10ms 15 Dec 2025 178th wansacis 🇩🇪 846 65 11ms 13 May 2022 178th krcs 🇵🇱 846 65 10ms 24 Nov 2022 178th ejini6969 846 65 10ms 1 Apr 2023 178th InspectorBoat 846 65 15ms 25 Oct 2023 178th jake6192 846 65 11ms 20 May 2025 178th LordSir101 846 65 10ms 11 Aug 2025 184th ChiefChippy2 833 66 10ms 4 May 2022 184th Radwatch 833 66 11ms 22 Jun 2022 184th TheCod-r 🇦🇶 833 66 11ms 10 Oct 2022 184th MadScience137 833 66 11ms 17 Oct 2022 184th nayakrujul 833 66 12ms 12 Mar 2023 184th HenryTy83 833 66 11ms 3 May 2023 184th charliegaming 833 66 11ms 3 Oct 2023 184th mobibluman 833 66 12ms 16 Oct 2023 184th azka1368 833 66 10ms 23 Nov 2023 184th thej10n 833 66 12ms 13 Jun 2024 184th Florian-Mt 833 66 10ms 22 Jul 2024 184th deancureton 833 66 11ms 29 Dec 2024 184th Quadruplay 833 66 11ms 12 Jul 2025 197th inverseLorentz 🇦🇺 821 67 11ms 25 Jun 2022 197th maxpelic 🇺🇸 821 67 11ms 5 Jul 2022 197th vroup 🇩🇰 821 67 10ms 29 Sep 2022 197th Bodo171 821 67 12ms 1 Dec 2022 197th Inbarw100 821 67 11ms 10 Jun 2023 197th raszpi 🇭🇺 821 67 14ms 1 Sep 2023 197th dijs 821 67 10ms 8 Mar 2024 197th yb1yb1 821 67 10ms 6 Oct 2024 197th smclaughlin-cf 821 67 10ms 25 Feb 2025 197th 52525rr 821 67 11ms 20 Oct 2025 207th Smetalo 809 68 11ms 25 Aug 2022 207th owen-c-parker 🇺🇸 809 68 10ms 23 Nov 2022 207th b10011 🇫🇮 809 68 11ms 27 Dec 2022 207th RasmusBV 809 68 12ms 19 Feb 2023 207th joakim-ronning 809 68 12ms 24 May 2023 207th TRexOnGit 809 68 10ms 31 Jan 2024 207th KasperKivimaeki 🇫🇮 809 68 12ms 1 Jan 2026 214th adoxography 797 69 11ms 13 Jul 2022 214th eshilo-draper 797 69 11ms 5 Oct 2022 214th 2pichar 797 69 11ms 11 Nov 2022 214th jorbDehmel 🇺🇸 797 69 10ms 17 Jun 2023 218th Jaro32768 🇸🇰 786 70 10ms 8 Feb 2024 218th Alex-Huggett 🇬🇧 786 70 10ms 15 Apr 2024 218th Moreallure 786 70 11ms 5 May 2024 218th AnnoyedArt1256 786 70 10ms 3 Jul 2025 222nd destofr 775 71 11ms 25 Aug 2022 222nd pyuraii 775 71 11ms 27 Sep 2022 222nd kydogia 775 71 10ms 18 Oct 2022 222nd jquade7 775 71 11ms 27 May 2023 222nd SniperSmiley 🇺🇸 775 71 10ms 7 Apr 2024 222nd dbkirk4211 775 71 10ms 3 May 2024 228th coolCucumber-cat 764 72 10ms 20 Mar 2023 228th mrmena 🇦🇺 764 72 11ms 19 Mar 2024 228th sulphemi 764 72 10ms 3 Apr 2025 231st gurglemurgle5 753 73 11ms 12 May 2022 231st adamnielson42 🇺🇸 753 73 14ms 24 Apr 2023 231st fourth-bit 753 73 14ms 23 Jun 2023 231st efgen 753 73 11ms 28 Jun 2023 231st AlbatrossBay 753 73 10ms 8 Oct 2024 231st ComputerKWasTaken 🇺🇸 753 73 10ms 20 Jan 2025 237th JesseNoEyes 🇺🇸 743 74 11ms 18 Sep 2024 238th draxler-h 724 76 12ms 14 Jan 2023 238th DragonaireM 724 76 11ms 6 Feb 2023 238th dteague3989 724 76 11ms 12 Aug 2023 First Prev 161–240 of 277 Next Last