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 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 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 Calendar 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 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 597th Irratix 🇳🇱 883 70 17ms 7 May 2022 597th rak1507 🇬🇧 883 70 19ms 7 May 2022 597th inventshah 883 70 16ms 9 May 2022 597th k3w1k0d3r 883 70 17ms 22 Jun 2022 597th ZakkkkAttackkkk 🇵🇭 883 70 17ms 14 Jul 2022 597th Bonjour27891 🇻🇳 883 70 19ms 14 Jul 2022 597th OllieBoyne 🇬🇧 883 70 21ms 19 Jul 2022 597th bricknellj 883 70 17ms 25 Jul 2022 597th wen1now 883 70 19ms 8 Aug 2022 597th 051 🇸🇬 883 70 18ms 8 Aug 2022 597th Sp3000 🇦🇺 883 70 18ms 8 Aug 2022 597th betaveros 883 70 18ms 9 Aug 2022 597th shelerr 883 70 18ms 9 Sep 2022 597th stewSquared 🇺🇸 883 70 18ms 27 Sep 2022 597th orthoplex 🇨🇽 883 70 23ms 9 Oct 2022 597th 5quiwyrm 883 70 17ms 19 Oct 2022 597th myfatemi04 883 70 18ms 4 Nov 2022 597th kevinmchung 883 70 18ms 4 Nov 2022 597th FlorianCassayre 🇫🇷 883 70 17ms 7 Nov 2022 597th fourth-bit 883 70 19ms 29 Nov 2022 597th QuincyNash 🇺🇸 883 70 20ms 29 Nov 2022 597th aksyristos 883 70 19ms 25 Dec 2022 597th thizanne 883 70 19ms 27 Dec 2022 597th Alex-x90 🇺🇸 883 70 19ms 20 Jan 2023 597th bob-th 883 70 21ms 24 Jan 2023 597th SirFireball3521 883 70 16ms 25 Jan 2023 597th stefangimmillaro 883 70 23ms 6 Feb 2023 597th Seek64 🇩🇪 883 70 20ms 7 Feb 2023 597th FieryIceStickie 883 70 19ms 3 Apr 2023 597th MeWhenI 🇻🇦 883 70 21ms 30 Apr 2023 597th fgrosshans 🇫🇷 883 70 18ms 5 May 2023 597th Shanethegamer 🇺🇸 883 70 20ms 25 May 2023 597th InigoK 🇺🇸 883 70 18ms 14 Jun 2023 597th quimey 883 70 16ms 15 Jun 2023 597th CornerMercury 🇬🇧 883 70 22ms 19 Jun 2023 597th ndren 883 70 21ms 2 Aug 2023 597th janbehrens 🇩🇪 883 70 20ms 24 Nov 2023 597th namelessiw 883 70 18ms 9 Jan 2024 597th mathisfun271 883 70 20ms 13 Feb 2024 597th Just4FunCoder 883 70 19ms 17 Feb 2024 597th ThijsLuttikhuis 883 70 22ms 3 Mar 2024 597th elgan65536 883 70 18ms 5 Mar 2024 597th jtaxen 883 70 20ms 1 Apr 2024 597th HumanoidCPU 883 70 19ms 6 May 2024 597th abc7-12 883 70 18ms 6 May 2024 597th ahmetdemirag 🇨🇾 883 70 18ms 9 Jun 2024 597th FranklinJiaChen 883 70 20ms 4 Jul 2024 597th 5cw 🇺🇸 883 70 17ms 13 Jul 2024 597th CaedenHarper 🇨🇦 883 70 18ms 3 Aug 2024 597th emgordon154 883 70 20ms 5 Aug 2024 597th dokutan 883 70 20ms 9 Aug 2024 597th jatloe 883 70 19ms 26 Aug 2024 597th lgrandco 883 70 19ms 9 Oct 2024 597th snydej 883 70 18ms 21 Nov 2024 597th erikji 883 70 19ms 4 Feb 2025 597th CutSandstone 883 70 21ms 4 Feb 2025 597th albanian-laundromat 883 70 19ms 12 Apr 2025 597th xsot 🇸🇬 883 70 24ms 3 May 2025 597th fuzzylojik-golf 🇺🇸 883 70 20ms 14 Jun 2025 597th smilesformiles3 883 70 22ms 14 Jun 2025 597th KasperKivimaeki 🇫🇮 883 70 21ms 30 Jun 2025 597th adaGrad1 883 70 18ms 10 Aug 2025 597th EthanJantz 883 70 19ms 10 Aug 2025 597th qpwoeirut 883 70 16ms 10 Aug 2025 597th katss2 883 70 18ms 17 Aug 2025 597th intgrah 883 70 21ms 23 Sep 2025 597th ryyyn 🇺🇸 883 70 20ms 29 Oct 2025 597th luuumine 🇫🇷 883 70 19ms 3 Nov 2025 597th Babafaba 883 70 20ms 27 days ago 597th commandblockguy 🇺🇸 883 70 19ms 18 days ago 597th hellopir2 883 70 28ms 11 days ago 597th bzijlema 🇳🇱 883 70 19ms 32 hours ago 673rd Irratix 🇳🇱 883 96 59ms 4 May 2022 673rd MeWhenI 🇻🇦 883 96 55ms 1 Jun 2022 673rd janbehrens 🇩🇪 883 96 58ms 21 Apr 2023 First Prev 601–675 of 3,508 Next Last