Collatz in all languages 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 ><> 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 ALGOL 68 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 ><> 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 ALGOL 68 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 951st 4very 849 63 10ms 10 Jun 2025 951st Ultra814 849 63 11ms 21 Aug 2025 963rd MeWhenI 🇻🇦 849 71 106ms 13 Dec 2022 964th Shanethegamer 🇺🇸 849 98 121ms 26 Oct 2022 964th emgordon154 849 98 119ms 18 Feb 2025 966th jared-hughes 849 100 58ms 20 Jul 2022 966th ZakkkkAttackkkk 🇵🇭 849 100 56ms 10 Aug 2022 966th Walter225 849 100 58ms 25 Jul 2023 969th DialFrost 🇸🇬 848 66 89ms 7 Apr 2025 969th KasperKivimaeki 🇫🇮 848 66 7ms 22 Dec 2025 971st SirBogman 🇺🇸 848 89 38ms 4 May 2022 972nd MeWhenI 🇻🇦 848 164 1,639ms 7 Nov 2025 973rd AdamHe17 847 73 21ms 31 May 2022 973rd AliceFord 847 73 22ms 2 Jun 2022 973rd Natanaelel 🇸🇪 847 73 16ms 16 Jun 2022 973rd btjones0 847 73 24ms 21 Jun 2022 973rd marcin7Cd 847 73 21ms 27 Jun 2022 973rd tri1212 🇻🇳 847 73 21ms 18 Jul 2022 973rd vhoulbreque 🇫🇷 847 73 20ms 18 Aug 2022 973rd KatieLG 🇬🇧 847 73 20ms 29 Aug 2022 973rd tkr-sh 🇰🇵 847 73 20ms 8 Sep 2022 973rd jroscoe5 847 73 21ms 15 Sep 2022 973rd fredrik-bakke 🇳🇴 847 73 19ms 18 Sep 2022 973rd firegene 🇮🇪 847 73 23ms 27 Sep 2022 973rd OhmNomNom 847 73 23ms 7 Oct 2022 973rd 0-4849 847 73 21ms 1 Nov 2022 973rd M0PKOBKA 847 73 25ms 19 Dec 2022 973rd calumacutt 847 73 24ms 19 Dec 2022 973rd thehylian 847 73 20ms 2 Jan 2023 973rd fynnkroeger 847 73 22ms 6 Jan 2023 973rd shellbertt 🇨🇦 847 73 20ms 13 Jan 2023 973rd hunt-g 847 73 21ms 4 Feb 2023 973rd ljweel 847 73 21ms 13 Feb 2023 973rd jmerle 🇳🇱 847 73 22ms 16 Feb 2023 973rd TaserTheFox 🇺🇸 847 73 20ms 14 Mar 2023 973rd pinguicula 847 73 22ms 6 Apr 2023 973rd TheoKeller1 847 73 24ms 11 Jun 2023 973rd fkantelberg 847 73 19ms 16 Jul 2023 973rd Mikey-Beep 🇬🇧 847 73 21ms 31 Aug 2023 973rd eiburns 847 73 22ms 9 Oct 2023 973rd htareque 847 73 21ms 13 Oct 2023 973rd wearsunscreen 847 73 22ms 18 Oct 2023 973rd Grrisly 847 73 20ms 10 Nov 2023 973rd m42km 847 73 21ms 11 Nov 2023 973rd GeneralPoxter 847 73 20ms 7 Dec 2023 973rd logvp 847 73 24ms 12 Jan 2024 973rd JoaoFelipe3 847 73 22ms 13 Jan 2024 973rd ehulinsky 🇺🇸 847 73 21ms 16 Feb 2024 973rd Lewenhaupt 847 73 22ms 23 Feb 2024 973rd Yewzir 🇧🇪 847 73 20ms 5 Apr 2024 973rd stertooy 🇧🇪 847 73 20ms 9 Jun 2024 973rd cuboids 847 73 20ms 11 Jul 2024 973rd jipsong 🇩🇪 847 73 21ms 23 Jul 2024 973rd mattyhempstead 847 73 23ms 6 Oct 2024 973rd wh3n3v3r 🇨🇿 847 73 23ms 18 Nov 2024 973rd klixel 🇨🇦 847 73 21ms 18 Nov 2024 973rd tjwrenn 847 73 20ms 10 Dec 2024 973rd nullie 847 73 20ms 19 Dec 2024 973rd maxgodfrey2004 🇨🇦 847 73 21ms 13 Feb 2025 973rd lolgeny 847 73 19ms 22 Feb 2025 973rd andrewjc2000 847 73 21ms 23 Feb 2025 973rd Bulmenisaurus 847 73 23ms 2 Mar 2025 973rd souta-1326 847 73 22ms 1 Apr 2025 973rd BenjaminHGong 847 73 21ms 26 May 2025 973rd FEZfan 🇦🇺 847 73 20ms 11 Jul 2025 973rd wuduculfre 847 73 21ms 28 Jul 2025 973rd BREMAUCY 🇫🇷 847 73 28ms 24 Aug 2025 973rd FortuiteMan 🇫🇷 847 73 21ms 28 Sep 2025 973rd miaoaixuan 847 73 22ms 30 Sep 2025 973rd Lv0Sys 🇵🇱 847 73 25ms 7 Dec 2025 973rd zacharysfrazee 847 73 21ms 26 days ago 973rd bpharaldsson 847 73 20ms 13 hours ago 1,033rd error256 847 81 68ms 13 Sep 2024 1,034th CLOStrophobic 🇮🇹 847 89 42ms 14 Feb 2025 1,035th bschorno 847 92 395ms 12 Oct 2022 1,035th ChrisTheisen 847 92 371ms 14 Dec 2022 1,035th kellantech 847 92 408ms 4 Jul 2023 1,035th Mezzofloat 847 92 405ms 26 Aug 2023 1,035th Maximizer02 847 92 419ms 1 Oct 2023 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