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 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 640th primo-ppcg 🇹🇭 884 70 26ms 5 May 2022 640th SirBogman 🇺🇸 884 70 23ms 5 May 2022 640th prplz 🇦🇺 884 70 20ms 5 May 2022 640th Irratix 🇳🇱 884 70 18ms 7 May 2022 640th rak1507 🇬🇧 884 70 20ms 7 May 2022 640th inventshah 884 70 17ms 9 May 2022 640th k3w1k0d3r 884 70 19ms 22 Jun 2022 640th ZakkkkAttackkkk 🇵🇭 884 70 19ms 14 Jul 2022 640th Bonjour27891 🇻🇳 884 70 20ms 14 Jul 2022 640th OllieBoyne 🇬🇧 884 70 21ms 19 Jul 2022 640th wen1now 884 70 21ms 8 Aug 2022 640th 051 🇸🇬 884 70 20ms 8 Aug 2022 640th Sp3000 🇦🇺 884 70 22ms 8 Aug 2022 640th betaveros 884 70 19ms 9 Aug 2022 640th shelerr 884 70 19ms 9 Sep 2022 640th stewSquared 🇺🇸 884 70 23ms 27 Sep 2022 640th orthoplex 🇨🇽 884 70 24ms 9 Oct 2022 640th 5quiwyrm 884 70 21ms 19 Oct 2022 640th myfatemi04 884 70 20ms 4 Nov 2022 640th kevinmchung 884 70 19ms 4 Nov 2022 640th FlorianCassayre 🇫🇷 884 70 19ms 7 Nov 2022 640th fourth-bit 884 70 19ms 29 Nov 2022 640th QuincyNash 🇺🇸 884 70 19ms 29 Nov 2022 640th aksyristos 884 70 20ms 25 Dec 2022 640th thizanne 884 70 20ms 27 Dec 2022 640th Alex-x90 🇺🇸 884 70 20ms 20 Jan 2023 640th bob-th 884 70 19ms 24 Jan 2023 640th SirFireball3521 884 70 18ms 25 Jan 2023 640th stefangimmillaro 884 70 22ms 6 Feb 2023 640th FieryIceStickie 884 70 20ms 3 Apr 2023 640th MeWhenI 🇻🇦 884 70 19ms 30 Apr 2023 640th fgrosshans 🇫🇷 884 70 19ms 5 May 2023 640th Shanethegamer 🇺🇸 884 70 20ms 25 May 2023 640th InigoK 🇺🇸 884 70 21ms 14 Jun 2023 640th quimey 884 70 16ms 15 Jun 2023 640th CornerMercury 🇬🇧 884 70 21ms 19 Jun 2023 640th ndren 884 70 21ms 2 Aug 2023 640th janbehrens 🇩🇪 884 70 21ms 24 Nov 2023 640th namelessiw 884 70 19ms 9 Jan 2024 640th mathisfun271 884 70 20ms 13 Feb 2024 640th Just4FunCoder 884 70 20ms 17 Feb 2024 640th ThijsLuttikhuis 884 70 22ms 3 Mar 2024 640th elgan65536 🇺🇸 884 70 20ms 5 Mar 2024 640th jtaxen 884 70 23ms 1 Apr 2024 640th HumanoidCPU 884 70 21ms 6 May 2024 640th abc7-12 884 70 20ms 6 May 2024 640th ahmetdemirag 🇨🇾 884 70 19ms 9 Jun 2024 640th FranklinJiaChen 884 70 20ms 4 Jul 2024 640th 5cw 🇺🇸 884 70 20ms 13 Jul 2024 640th CaedenHarper 🇨🇦 884 70 19ms 3 Aug 2024 640th emgordon154 884 70 25ms 5 Aug 2024 640th dokutan 884 70 19ms 9 Aug 2024 640th jatloe 884 70 18ms 26 Aug 2024 640th lgrandco 884 70 21ms 9 Oct 2024 640th snydej 884 70 21ms 21 Nov 2024 640th erikji 884 70 21ms 4 Feb 2025 640th CutSandstone 884 70 19ms 4 Feb 2025 640th albanian-laundromat 🇺🇸 884 70 21ms 12 Apr 2025 640th xsot 🇸🇬 884 70 23ms 3 May 2025 640th fuzzylojik-golf 🇺🇸 884 70 21ms 14 Jun 2025 640th smilesformiles3 884 70 22ms 14 Jun 2025 640th KasperKivimaeki 🇫🇮 884 70 20ms 30 Jun 2025 640th adaGrad1 884 70 20ms 10 Aug 2025 640th EthanJantz 884 70 21ms 10 Aug 2025 640th qpwoeirut 884 70 16ms 10 Aug 2025 640th katss2 884 70 19ms 17 Aug 2025 640th intgrah 884 70 21ms 23 Sep 2025 640th ryyyn 🇺🇸 884 70 23ms 29 Oct 2025 640th luuumine 🇫🇷 884 70 20ms 3 Nov 2025 640th Babafaba 884 70 19ms 7 Nov 2025 640th commandz0 🇺🇸 884 70 20ms 16 Nov 2025 640th hellopir2 884 70 20ms 23 Nov 2025 640th bzijlema 🇳🇱 884 70 21ms 3 Dec 2025 640th blaztoma 🇱🇹 884 70 23ms 16 Feb 2026 640th firegene 🇮🇪 884 70 21ms 25 Feb 2026 640th Googolplexo 🇷🇺 884 70 19ms 15 days ago 640th jusaka 884 70 21ms 7 days ago 640th edsrzf 🇳🇿 884 70 23ms 3 days ago 640th Mikey-Beep 🇬🇧 884 70 31ms 29 hours ago 720th GrayJoKing 🇦🇺 884 84 35ms 19 Jun 2022 First Prev 641–720 of 3,729 Next Last